DIY_EFI Digest Thursday, 14 January 1999 Volume 04 : Number 033 In this issue: Re: GM TPI tips for a newbie Programmable ECU's (Was GM TPI tips for a newbie) Re: Option Codes (Off Topic) Re: GM TPI tips for a newbie Re: GM TPI tips for a newbie Re: GM TPI tips for a newbie Re: TBI EFI plans Re: Intel 80C51GB RE: Factory Instrument Panels ECU6 EFI system construction Ecu6 Re: GM TPI tips for a newbie Re: ECU6 EFI system construction Re: ECU6 EFI system construction Re: ECU6 EFI system construction Re: GM TPI tips for a newbie Re: ECU6 EFI system construction 93 Z disassembly - I have jsrs to non prom location. O2 bung brazing/welding? Re: O2 bung brazing/welding? Re: O2 bung brazing/welding? Re: O2 bung brazing/welding? Re: Factory Instrument Panels Re: ECM Module Help #1226823 See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: Charles Brooks Date: Wed, 13 Jan 1999 20:20:32 -0500 Subject: Re: GM TPI tips for a newbie TPIS says the only difference between the 5.0 and 5.7 TPI motors is the chip in the ECU (Same ECU even). If this is true the intake should be good for 400HP. I do expect more from this motor but I'm willing to give up a little peak HP for a flatter torque curve and better gas mileage. If the intake proves to be TOO restrictive well, I'll have to cross that bridge when I come to it. I'm not sure which ECU it is (I haven't taken posession of everything yet) but I'm wondering if anyone has any experience with the 1985 5.0 Camaro TPI system? If so can you point me toward info on it? Thanks, Charles Brooks Roger Heflin wrote: > > I don't think a 5.0 intake will flow enough air to feed a 406. That > will be your major restriction. There are aftermarket (ACCEL) intake > manifolds that should flow the required amounts but aren't cheap. > > On the custom chips, there are people on this list reverse engineering > their chips and determine what addresses need to be adjusted to get > the needed performance. I am working on my 93 Z28 computer. ------------------------------ From: Charles Brooks Date: Wed, 13 Jan 1999 21:04:33 -0500 Subject: Programmable ECU's (Was GM TPI tips for a newbie) I've looked at several of them but frankly I'm not sure what I should be looking for in a programmable EFI system. The Accell DFI system seems popular and so do the Haltech products. I must have looked at a dozen Mfr.'s. I was leaning toward the Holley system but after receiving several messages on the problems and deficiencies they have I changed my mind. Which system(s) is/are considered the best? Charles David Sagers wrote: > > In putting a TPI on a 406 the factory settings work just fine > with the 28 lbs injectors, but a built motor is very different > than a stock motor. > > For a stock 406 28 lb injectors are all that's needed. If > it's built the perhaps a 30 lb. Also consider finding a > programable system so that you can dial in the fuel & ignition > curves to match your cam, headers, etc... I would look for a > computer that can be programmed from a lap top while you drive. > Other members can tell you how to burn new chips. It's your > choice. ------------------------------ From: EFISYSTEMS@xxx.com Date: Wed, 13 Jan 1999 20:51:15 EST Subject: Re: Option Codes (Off Topic) Hi Kevin, If you get a Gm service manual for your vehicle it has all the options listed right in the front.....hth's - -Carl Summers In a message dated 1/13/99 9:01:39 AM Pacific Standard Time, kv@xxx.com writes: << Subj: Option Codes (Off Topic) Date: 1/13/99 9:01:39 AM Pacific Standard Time From: kv@xxx.com Sender: owner-diy_efi@xxx.edu Reply-to: diy_efi@xxx.edu To: diy_efi@xxx.edu Has anyone seen a listing (or know how I can get one) of the three digit "option codes" and their associated options for a given vehicle? I have a new (used) car and am wondering what the thing came with. ________________________________________________ Kevin Vannorsdel IBM Arm Electronics Development 408-256-6492 Tie 276-6492 kv@xxx.com ------------------------------ From: "Bruce Plecan" Date: Wed, 13 Jan 1999 21:12:09 -0500 Subject: Re: GM TPI tips for a newbie - -----Original Message----- From: Peter Fenske To: diy_efi@xxx.edu> Date: Wednesday, January 13, 1999 9:03 PM Subject: Re: GM TPI tips for a newbie The minirams always sounded nice, but puttting one togeter is a hassle. One guy on the 3rd gen list spent literally months getting it bolted together, from the linkage, to everything he touched nothing fit. I wasn't there so this is just rumor control. Bruce >Hi Charles >For the money the stock setup is ok. You peak rpm is gonna be >about 4500 rpm but the torgue is awesome. >Buy SVO injectors from ford. The 24# would do the job and run bout 200$ a >set. >As for calibrating your chip there is a lot of helpful people round here. >With the 406 you are facing the same lemma as me. >My vette runs a traction limited 13.2 at about 107 with the stock >manifold. The way to get bout a half second is to go with the tpis >miniram..But they cost in gold.. Bigger runners, the superram are >just a crutch when you deal with 383s and 406s.. > >gl:peter > ------------------------------ From: "Andrew K. Mattei" Date: Wed, 13 Jan 1999 21:10:55 -0500 Subject: Re: GM TPI tips for a newbie Charles Brooks wrote: > > I'm not sure which ECU it is (I haven't taken posession of > everything yet) but I'm wondering if anyone has any experience > with the 1985 5.0 Camaro TPI system? If so can you point me > toward info on it? Well, not but three or four days ago, I posted about the 1985 5.0 TPI Camaro ECM that I have (with TPI system). Here's a cut-paste from my email from last week... I appreciate all the responses! OK, here's some more info. Peter, I found that number you gave in Ludis' archives, and thought I might have been mistaken, but the bar code sticker on the metal cover has the number 16052541 on it :-/ The bar code sticker on the PCB inside has "255001205585161" OK, for the PROM information - I see "HLK" and "2315" on it. Reason I'm asking... I *think* this came from a TPI305, but we want to use it on a TPI350. I was hoping for a quick EPROM burn, but if I can't cross ref it, I don't know if it'll take a standard available .bin or not :) I'm going to copy the 305 EPROM to a file tomorrow. Just for my archives - - I may be selling the system soon... I'm personally going to be working with a 1989 L98 TPI system (165 ECM)... Thinking about following up with the 730 Sy/Ty ECM test with a bench, then the motor ;) Regards, Andrew ------------------------------ From: "Bruce Plecan" Date: Wed, 13 Jan 1999 21:21:45 -0500 Subject: Re: GM TPI tips for a newbie - -----Original Message----- From: Charles Brooks To: diy_efi@xxx.edu> Date: Wednesday, January 13, 1999 9:04 PM Subject: Re: GM TPI tips for a newbie 85 ecm 1226870 32K Prom (MAF) 86-89 1227165 128K Prom (MAF) 89 version did away with 9th injector 90-92 1227730 256K Prom (MAP) The larger the prom the more room for program/switches/tables/settings, more refinement. Bruce >TPIS says the only difference between the 5.0 and 5.7 TPI motors >is the chip in the ECU (Same ECU even). If this is true the intake >should be good for 400HP. I do expect more from this motor but >I'm willing to give up a little peak HP for a flatter torque curve >and better gas mileage. If the intake proves to be TOO restrictive >well, I'll have to cross that bridge when I come to it. > >I'm not sure which ECU it is (I haven't taken posession of >everything yet) but I'm wondering if anyone has any experience >with the 1985 5.0 Camaro TPI system? If so can you point me >toward info on it? >Thanks, >Charles Brooks ------------------------------ From: Al Lipper Date: Wed, 13 Jan 1999 18:23:19 -0800 Subject: Re: TBI EFI plans The complete plans and software for my EFI system are available at: http://members.aol.com/ALIPPER/ Al At 08:18 AM 1/13/99 +0200, you wrote: >Hi Al Lipper > >I am interested in you efi system, but I do not know where you have posted >the design. Can you send me a pointer please. > >Cheers >Carlo ------------------------------ From: Al Lipper Date: Wed, 13 Jan 1999 18:37:19 -0800 Subject: Re: Intel 80C51GB Indeed the 80C51GB is no longer made, however, Richar Quass wrote in a recent posting: It appears that a number of them would be available till Dec'99. I was looking at the 80c552, it may have some possibilities. I purchased a few of them from Allied Electronics 800-433-5700, but that was a while ago. They cost about $17 each for the version with 8K OTP memory. As I mention in the README file, it makes sense to upgrade the circuit to use a currently made chip. The Phillips 87C552 seems to fit the bill quite well, and may even have some advantages. Furthermore, there may even be some better chips out there this year (like some with flash memory built in that can hold the program flash memory update routines (read the README about FLOAD and this will make sense). It's great to see so many people working on this project. Al At 10:39 PM 1/13/99 +0000, you wrote: >Hi Al, > >I recently downloaded your 8051 based EFI project and really like your >approach. I got quite enthusiastic, and started looking at sourcing parts. >Today I had a look on Intel's web site to find that this version of the >80C51 went obsolete and last orders were taken in October 98. I wondered if >you know of a second source for this device or an alternative. I am hopping >to fuel inject my Rover V8(Buick 215) that's fitted in my Kit car > http://www.g8stw.demon.co.uk/carproj.html ). Then guys who designed my car >are sorting out the engineering side for me, and as a design engineer I am >happy to do my own electronics. I hope the news of the processor doesn't >cause your too many problems as you have such a great project it would be a >shame to hold things up. Keep up the good work its a very nice approach. > >If you have any further info I would be very pleased to here from you. > >All the best > >John > ------------------------------ From: "Scott Feaver" Date: Wed, 13 Jan 1999 20:46:30 -0500 Subject: RE: Factory Instrument Panels After looking over the circuits used on both tachs, I came to the conclusion that the only difference was the capactor in the RC network. On the 4-cylinder model, it was a .47uF cap, and the V6 one has a .33uF. I just swapped that part over to the turbo tach and all was well :) The redline on the Turbo was 6000, on the V6 tach, it "orange-lines" at 5500, but red starts at 6000. Max engine speed (as limited by the ecm) is 6200rpm. Thanks everyone for their help. One thing that I noted is, the resistor network was identical on both boards. And the circuit is very close to the one in the tech note from National. > -----Original Message----- > From: owner-diy_efi@xxx.edu > [mailto:owner-diy_efi@xxx.edu]On Behalf Of Ludis > Langens > Sent: Wednesday, January 13, 1999 6:51 PM > To: Diy_efi > Subject: Re: Factory Instrument Panels > > > "Scott Feaver" wrote: > > The reason I am asking is I need to adapt a tachometer module from a 90 > > Turbo Sunbird to a 91 Sunbird. The difference is the 90 is a > four cylinder > > car, and the 91 is a 3.1V6. The tach is reading about 50% > higher in the V6 > > (which makes sense because for every 2 pulses it expects to > see, it receives > > three). > > As other's have mentioned, GM likes to use the NatSemi chip. GM's > circuit is almost the same as the schematic in NatSemi's data sheet. An > RC combination calibrates the tach. I doubt you can find a temperature > stable capacitor of the correct value. So you should change the > resistor. On the tach circuit board you'll find a thin (thick?) film > resistor pack (in a DIP package). The resistor element on the top layer > is the calibration element. You'll notice it is laser trimmed/cut. > You'll need to bypass this resistor with your own. > > What's the redline on the 2.0turbo tach? The 3.1 might need a different > limit - probably 6000 rpm. Of course this is just an instrumentation > issue. The tach redline needn't agree with the ECM redline. > > "David A. Cooley" wrote: > > Usually there is a resistor to be changed in a tach for the number of > > cyls... not sure if the dash's had a switch or jumper or > socketed resistor, > > but I can't see them using 2 different tachs for the same year, > different > > engine... > > Wanna bet? A parts book shows eight different tachs used in one model > of car over a five year range. (L4 vs V6, US vs Canada, non-backlit vs > backlit, w/ oil gauge vs w/ volt gauge vs w/ no gauge) > > -- > Ludis Langens ludis (at) cruzers (dot) com > Mac, Fiero, & engine controller goodies: http://www.cruzers.com/~ludis/ > ------------------------------ From: Al Lipper Date: Wed, 13 Jan 1999 19:22:34 -0800 Subject: ECU6 EFI system construction A number of people have sent me mail indicating a desire to work on the ECU project - this is great! I beleive that we can end up with a much better system with a dozen people each focusing on a specific aspect of the project than lots of people trying to do it by themselves. If people are interested in this, I would be happy to coordinate the development process, as well as use my homepage as a central location for communicating project status among people (http://members.aol.com/ALIPPER/ It is also linked to the projects section of the DIY_EFI web site). In particular, we need people to specialize in the following areas: - - Programming the 8051 (or derivative with advanced features like counter arrays) - - BASIC programming (Preferably with experience in real-time control systems) - - Detailed EFI operational theory (to help guide the programmers) - - Electronics design (with microprocessor/microcontroller experience) - - Automotive electronics experience (dealing with noise, driving high currents, etc.) - - PC board layout & routing - - Building and testing the system on your own vehicle (for giving the designers feedback) There are probably many more areas that will arise as work progresses, but for now, this should give us a good start. Also, if anyone has the ability to have balnk PC boards manufactured in small quantities for a low cost, that would be great (I've already tried non-professional fabrication of these boards, and they're way too dense and complex to have this work reliably). I've had some of them made so far and paid about $130 for four. If we could get the cost down, that would be good. Someone asked for additional info on how well the system works. I drove around with it for about six months and it worked surprisingly well. It's still missing some "features" like an accellerator pump, has a slightly rich mixture at idle and the learning routines need work, but otherwise it was quite drivable. Only once did I have a system failure, and that was due to my neglecting to put any kind of a heat sink on the injector drivers (I didn't think they were that hot...) As far as who owns the result of a group effort like this, I think we all should. If it finds its way to the market someday, I believe that people who contributed to the effort should receive a proportional part of any profit. But that's not really the point. I'm in it for the fun and not for the money, as I'm sure is true with everyone here. So...If you have time to devote to this project, let's get going! Al Al Lipper efi@xxx.org (650) 322-9112 ------------------------------ From: "Fran and Bud" Date: Wed, 13 Jan 1999 19:05:39 +0000 Subject: Ecu6 Al, Your Ecu6 sounds like it may be appropriate for a couple of projects I have to get started on. Count me in for more info and whatever help I can provide. (Skewed toward the mechanical/hardware portions). Bud ------------------------------ From: Alain Toussaint Date: Wed, 13 Jan 1999 23:02:26 -0500 (EST) Subject: Re: GM TPI tips for a newbie > I don't think a 5.0 intake will flow enough air to feed a 406. That > will be your major restriction. There are aftermarket (ACCEL) intake > manifolds that should flow the required amounts but aren't cheap. possible suggestion here is to extrude hone the intake and enjoy the torque,ummm....i wonder if the intake has enough meat so the extrude hone process don't go through the intake ??? Alain - ----signature---- No Keyboard found, Press any key to continue. what is the any key ?? Windows 9x: n. 32 bit extensions and a graphical shell for a 16 bit patch to an 8 bit operating system originally coded for a 4 bit microprocessor, written by a 2 bit company that can't stand 1 bit of competition. ------------------------------ From: "Michael J. Kupec" Date: Wed, 13 Jan 1999 23:26:38 -0500 Subject: Re: ECU6 EFI system construction Al, Have you changed anything in the EFI.ZIP file since 3 Jan? I've tried to D/L it tonight, but AOL keeps timing out during the transfer. If others are having problems with getting the file, I can upload it to my web site for others to retrieve. Michael J. Kupec mkupec@xxx.com http://members.xoom.com/BroncoMike President of Off Camber Crawlers http://www.off-road.com/~occweb 1970 "Calico" Bronco w/351W (in a constant state of disassembly/refinement...) 1964 1/2 260 Convertible w/PS, PB, & Power Top 1965 289 HP "K" Coupe w/PS, PB, & Pony Int. (Early '65, not a GT) "To improve is to change; to be perfect is to change often." - Winston Churchill I live with constant fear and danger every day... and sometimes she lets me go four-wheeling! Get in, Sit down, Shut up, and Hold on! - -----Original Message----- From: Al Lipper To: diy_efi@xxx.edu>; alipper@xxx.net> Date: Wednesday, January 13, 1999 10:39 PM Subject: ECU6 EFI system construction >A number of people have sent me mail indicating a desire to work on the ECU >project - this is great! I beleive that we can end up with a much better >system with a dozen people each focusing on a specific aspect of the >project than lots of people trying to do it by themselves. If people are >interested in this, I would be happy to coordinate the development process, >as well as use my homepage as a central location for communicating project >status among people (http://members.aol.com/ALIPPER/ It is also linked to >the projects section of the DIY_EFI web site). > >In particular, we need people to specialize in the following areas: > >- Programming the 8051 (or derivative with advanced features like counter >arrays) >- BASIC programming (Preferably with experience in real-time control systems) >- Detailed EFI operational theory (to help guide the programmers) >- Electronics design (with microprocessor/microcontroller experience) >- Automotive electronics experience (dealing with noise, driving high >currents, etc.) >- PC board layout & routing >- Building and testing the system on your own vehicle (for giving the >designers feedback) > >There are probably many more areas that will arise as work progresses, but >for now, this should give us a good start. Also, if anyone has the ability >to have balnk PC boards manufactured in small quantities for a low cost, >that would be great (I've already tried non-professional fabrication of >these boards, and they're way too dense and complex to have this work >reliably). I've had some of them made so far and paid about $130 for four. > If we could get the cost down, that would be good. > >Someone asked for additional info on how well the system works. I drove >around with it for about six months and it worked surprisingly well. It's >still missing some "features" like an accellerator pump, has a slightly >rich mixture at idle and the learning routines need work, but otherwise it >was quite drivable. Only once did I have a system failure, and that was >due to my neglecting to put any kind of a heat sink on the injector drivers >(I didn't think they were that hot...) > >As far as who owns the result of a group effort like this, I think we all >should. If it finds its way to the market someday, I believe that people >who contributed to the effort should receive a proportional part of any >profit. But that's not really the point. I'm in it for the fun and not >for the money, as I'm sure is true with everyone here. So...If you have >time to devote to this project, let's get going! > > Al > >Al Lipper >efi@xxx.org >(650) 322-9112 > > ------------------------------ From: "Ronald T. Webb" Date: Wed, 13 Jan 1999 19:41:00 -0900 Subject: Re: ECU6 EFI system construction - --------------64BE847F9CE6277A6239DC49 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Greetings - This "ECU 6" sounds interesting. 2 suggestions 1- Before deciding to build our own processor board, look at New Micro's They have several boards - fully functional - in the $30 to $80 range... 2 - Development software is easiest if not done with the cheap public domain stuff - My own favorite is Embedded Workbench by IAR . Their C development system for the 8751 is like working with the old Turbo Pascal. They have a free demo version that's still better than small C. Just a suggestion. I also would get involved. Hardware or software... Al Lipper wrote: > A number of people have sent me mail indicating a desire to work on the ECU > project - this is great! I beleive that we can end up with a much better > system with a dozen people each focusing on a specific aspect of the > project than lots of people trying to do it by themselves. If people are > interested in this, I would be happy to coordinate the development process, > as well as use my homepage as a central location for communicating project > status among people (http://members.aol.com/ALIPPER/ It is also linked to > the projects section of the DIY_EFI web site). > > In particular, we need people to specialize in the following areas: > > - Programming the 8051 (or derivative with advanced features like counter > arrays) > - BASIC programming (Preferably with experience in real-time control systems) > - Detailed EFI operational theory (to help guide the programmers) > - Electronics design (with microprocessor/microcontroller experience) > - Automotive electronics experience (dealing with noise, driving high > currents, etc.) > - PC board layout & routing > - Building and testing the system on your own vehicle (for giving the > designers feedback) > > There are probably many more areas that will arise as work progresses, but > for now, this should give us a good start. Also, if anyone has the ability > to have balnk PC boards manufactured in small quantities for a low cost, > that would be great (I've already tried non-professional fabrication of > these boards, and they're way too dense and complex to have this work > reliably). I've had some of them made so far and paid about $130 for four. > If we could get the cost down, that would be good. > > Someone asked for additional info on how well the system works. I drove > around with it for about six months and it worked surprisingly well. It's > still missing some "features" like an accellerator pump, has a slightly > rich mixture at idle and the learning routines need work, but otherwise it > was quite drivable. Only once did I have a system failure, and that was > due to my neglecting to put any kind of a heat sink on the injector drivers > (I didn't think they were that hot...) > > As far as who owns the result of a group effort like this, I think we all > should. If it finds its way to the market someday, I believe that people > who contributed to the effort should receive a proportional part of any > profit. But that's not really the point. I'm in it for the fun and not > for the money, as I'm sure is true with everyone here. So...If you have > time to devote to this project, let's get going! > > Al > > Al Lipper > efi@xxx.org > (650) 322-9112 - --------------64BE847F9CE6277A6239DC49 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Greetings -

This "ECU 6" sounds interesting. 2 suggestions

1- Before deciding to build our own processor board, look at  New Micro's
    They have several boards - fully functional - in the $30 to $80 range...

2 - Development software is easiest if not done with the cheap public domain stuff -
     My own favorite is Embedded Workbench by  IAR . Their C development        system for the 8751 is like working with the old Turbo Pascal. They have a free demo version that's still better than small C.

Just a suggestion. I also would get involved. Hardware or software...
 
 

Al Lipper wrote:

A number of people have sent me mail indicating a desire to work on the ECU
project - this is great!  I beleive that we can end up with a much better
system with a dozen people each focusing on a specific aspect of the
project than lots of people trying to do it by themselves.  If people are
interested in this, I would be happy to coordinate the development process,
as well as use my homepage as a central location for communicating project
status among people (http://members.aol.com/ALIPPER/  It is also linked to
the projects section of the DIY_EFI web site).

In particular, we need people to specialize in the following areas:

- Programming the 8051 (or derivative with advanced features like counter
arrays)
- BASIC programming (Preferably with experience in real-time control systems)
- Detailed EFI operational theory (to help guide the programmers)
- Electronics design (with microprocessor/microcontroller experience)
- Automotive electronics experience (dealing with noise, driving high
currents, etc.)
- PC board layout & routing
- Building and testing the system on your own vehicle (for giving the
designers feedback)

There are probably many more areas that will arise as work progresses, but
for now, this should give us a good start.  Also, if anyone has the ability
to have balnk PC boards manufactured in small quantities for a low cost,
that would be great (I've already tried non-professional fabrication of
these boards, and they're way too dense and complex to have this work
reliably).  I've had some of them made so far and paid about $130 for four.
 If we could get the cost down, that would be good.

Someone asked for additional info on how well the system works.  I drove
around with it for about six months and it worked surprisingly well.  It's
still missing some "features" like an accellerator pump, has a slightly
rich mixture at idle and the learning routines need work, but otherwise it
was quite drivable.  Only once did I have a system failure, and that was
due to my neglecting to put any kind of a heat sink on the injector drivers
(I didn't think they were that hot...)

As far as who owns the result of a group effort like this, I think we all
should.  If it finds its way to the market someday, I believe that people
who contributed to the effort should receive a proportional part of any
profit.  But that's not really the point.  I'm in it for the fun and not
for the money, as I'm sure is true with everyone here.  So...If you have
time to devote to this project, let's get going!

                                Al

Al Lipper
efi@xxx.org
(650) 322-9112

- --------------64BE847F9CE6277A6239DC49-- ------------------------------ From: "Mike Pitts" Date: Wed, 13 Jan 1999 23:40:27 -0500 Subject: Re: ECU6 EFI system construction >> It's still missing some "features" like an accellerator pump Is this what delta TPS and delta MAP are used for? If so, the routines to do this look pretty simple in GM equipment. - -Mike ========================================== Mike Pitts Delray Beach, FL mpitts@xxx.net ========================================== ------------------------------ From: EFISYSTEMS@xxx.com Date: Wed, 13 Jan 1999 23:42:25 EST Subject: Re: GM TPI tips for a newbie In a message dated 1/13/99 8:05:57 PM Pacific Standard Time, alaint@xxx.ca writes: << Subj: Re: GM TPI tips for a newbie Date: 1/13/99 8:05:57 PM Pacific Standard Time From: alaint@xxx.ca (Alain Toussaint) Sender: owner-diy_efi@xxx.edu Reply-to: diy_efi@xxx.edu To: diy_efi@xxx.edu (DIY_EFI Fuel Injection List) > I don't think a 5.0 intake will flow enough air to feed a 406. That > will be your major restriction. There are aftermarket (ACCEL) intake > manifolds that should flow the required amounts but aren't cheap. possible suggestion here is to extrude hone the intake and enjoy the torque,ummm....i wonder if the intake has enough meat so the extrude hone process don't go through the intake ??? Alain >> In my opinion the best scenario(if you have the ambition) would be to get the 90-92 tpi harness from Painless Wiring, buy the software from Turbo Shop for the 7730 processor, and start tuning....you will need of course the eprom burner and erasure...also a reasonable scanner and a way to monitor the Air/Fuel Ratio.....if you really want to learn something this will be fun and at alot of times frustrating....clue yourself into Bruce's 101 stuff...it will be very helpful...and also the group here is also a good source of good advise, as we all started somewhere....hth's - -Carl Summers ------------------------------ From: "Bruce Plecan" Date: Thu, 14 Jan 1999 00:04:38 -0500 Subject: Re: ECU6 EFI system construction - -----Original Message----- From: Mike Pitts To: diy_efi@xxx.edu> Date: Wednesday, January 13, 1999 11:53 PM Subject: Re: ECU6 EFI system construction Toss in delta quantity, and a coolant temp correction, and I think that would take care of all of it. Bruce Doc said we needed a Mascot so we went to the Pet Shop today. Trouble was he got sick, and I wound up carring him out. Security stopped me, and wanted me to pay for him. Really hurt his feelings. >>> It's still missing some "features" like an accellerator pump >Is this what delta TPS and delta MAP are used for? If so, the >routines to do this look pretty simple in GM equipment. >-Mike >========================================== >Mike Pitts >Delray Beach, FL >mpitts@xxx.net >========================================== > > ------------------------------ From: Roger Heflin Date: Wed, 13 Jan 1999 23:02:27 -0600 Subject: 93 Z disassembly - I have jsrs to non prom location. Hey, I have finished the TCC control routine, and I think I understand all of it, except how the TCC actually gets triggered. There aren't any things checking the TCC bit and setting a register in the $1000 range. I did find some odd code that does jsr into the $5000 range, the prom is mapped from $8000-$FFFF, so $5000 would have to be built into the computer's internals. There about 10 of these jsrs to different addresses in the $5000 range. Does anyone have any idea what these do? If I really want to know bad, I will setup a prom to read that range (while petting the watchdog), and output that data to the aldl port. I am thinking some of the hardware operations (TCC and several others maybe) are being done there. Roger ------------------------------ From: Ross Corrigan Date: Wed, 13 Jan 1999 22:18:58 -0800 Subject: O2 bung brazing/welding? I'm going to need an O2 bung installed in my exhaust right below my header, is this something I can just drill out my exhaust and 'braze' the bung on? I have no welding/brazing etc experience but wouldn't mind learning....... gonna need it for my 4Di and EGO sensor I've rallied the parts for thanks in advance (not directly efi I guess but I'm sure you guys can answer this...) PS still looking for a fine deal on a 486 notebook w/ modem and working battery... Ross Corrigan / Vancouver, Canada IZCC#255 EZCC #45a BCZCR 1980 280ZX w/ parts from '68,'86,'87,'95 Camaro, '66, '69, '82 'vette, 82 280ZX, '86, '88 300ZXT, and more 68 327 9.5:1, 2830lbs dry, GTech times dropping steadily;^) ICQ # 11549358 http://home.iSTAR.ca/~zxv/index.shtml http://207.212.212.139/~corrigan/gearheads/pics/wheels/sirbg.jpg 'where a Z belongs' ------------------------------ From: Pedro Haynes Date: Thu, 14 Jan 1999 03:13:28 -0400 Subject: Re: O2 bung brazing/welding? You need to weld the bung on. Never seen a brazing on an exhaust for all the right reasons, some are: It sets up a cell (two different types of metal) causing the more reactive metal, in this case steel to rust. We know of the problems with rust and exhaust. In addition where the bung is to be brazed is some times known to get red hot, depending on the drazing rod you use, the damn thing may melt. >I'm going to need an O2 bung installed in my exhaust right below my header, >is this something I can just drill out my exhaust and 'braze' the bung on? >I have no welding/brazing etc experience but wouldn't mind learning....... > > ------------------------------ From: Alain Toussaint Date: Thu, 14 Jan 1999 02:20:51 -0500 (EST) Subject: Re: O2 bung brazing/welding? > PS still looking for a fine deal on a 486 notebook w/ modem and working > battery... www.ebay.com - ----signature---- No Keyboard found, Press any key to continue. what is the any key ?? Windows 9x: n. 32 bit extensions and a graphical shell for a 16 bit patch to an 8 bit operating system originally coded for a 4 bit microprocessor, written by a 2 bit company that can't stand 1 bit of competition. ------------------------------ From: Shannen Durphey Date: Thu, 14 Jan 1999 01:57:08 -0500 Subject: Re: O2 bung brazing/welding? I've been successful drilling a hole in the pipe/header large enough for the sensor portion of the O2 sensor, and welding an 18mm spark plug anti-fouler around the hole. The anti-fouler needs to be cut short enough so the sensor protrudes into the exhaust stream. If you find a source for more "professional" bungs, please post it. Shannen diy_efi@xxx.edu wrote: > > I'm going to need an O2 bung installed in my exhaust right below my header, > is this something I can just drill out my exhaust and 'braze' the bung on? > I have no welding/brazing etc experience but wouldn't mind learning....... > > gonna need it for my 4Di and EGO sensor I've rallied the parts for > > thanks in advance > > (not directly efi I guess but I'm sure you guys can answer this...) > > PS still looking for a fine deal on a 486 notebook w/ modem and working > battery... > > Ross Corrigan / Vancouver, Canada > IZCC#255 EZCC #45a BCZCR > 1980 280ZX w/ parts from '68,'86,'87,'95 Camaro, '66, '69, '82 'vette, 82 > 280ZX, '86, '88 300ZXT, and more > 68 327 9.5:1, 2830lbs dry, GTech times dropping steadily;^) > ICQ # 11549358 > http://home.iSTAR.ca/~zxv/index.shtml > http://207.212.212.139/~corrigan/gearheads/pics/wheels/sirbg.jpg 'where a > Z belongs' ------------------------------ From: Ludis Langens Date: Thu, 14 Jan 1999 00:50:09 -0800 Subject: Re: Factory Instrument Panels Shannen Durphey wrote: > > > (L4 vs V6, US vs Canada, non-backlit vs > > backlit, w/ oil gauge vs w/ volt gauge vs w/ no gauge) > > Yeah, I'm still trying to convert metric RPM into standard RPM. Oil pressure in psi versus oil pressure in KPa's (for models with the oil pressure gauge in the tach.) Yes it's silly. - -- Ludis Langens ludis (at) cruzers (dot) com Mac, Fiero, & engine controller goodies: http://www.cruzers.com/~ludis/ ------------------------------ From: Ludis Langens Date: Thu, 14 Jan 1999 01:52:21 -0800 Subject: Re: ECM Module Help #1226823 > I have several ECM Modules with the part # 1226823. Does anybody what > these are? I can't find the number anywhere. A physical description might be useful. What connectors does this ECM use? What does(do) the board(s) inside look like? What chip numbers does it use? The 12268xx implies something first used in 1985. - -- Ludis Langens ludis (at) cruzers (dot) com Mac, Fiero, & engine controller goodies: http://www.cruzers.com/~ludis/ ------------------------------ End of DIY_EFI Digest V4 #33 **************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".