DIY_EFI Digest Saturday, 31 May 1997 Volume 02 : Number 184 In this issue: hc11 Efi Code Re: O2 sensor fooler CCC/cam ??? Re: GN "bashing" RE: DIY_EFI Digest V2 #183 Re: CCC/cam ??? Re: CCC/cam ??? Re: O2 sensor fooler Re: ALDL Interface Re: Buick 3.8L V6 See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: mike costa Date: Fri, 30 May 1997 09:17:25 -0400 Subject: hc11 Efi Code Hello All, I'm new to the list, but I'm working on an efi computer project for a friend of mine's four banger and i'm looking for some sample hc11 code. Whether it be a manufacture's commented code from a hacked ecu or someone's code from a personal project. Any help would be appreciated. Thanks Mike Costa ------------------------------ From: "Ross Myers" Date: Sat, 31 May 1997 00:45:03 +0000 Subject: Re: O2 sensor fooler > Seth, > That sounds interesting...I could fool around (not literally...well, > sorta) with my Quad4 Fiero. I don't think they richen it up enough under > full throttle for some reason. > Tell him to start coughing! > > Tim Correct me if I'm wrong here, but the ECU is only interested in the O2 sensor O/P in closed loop, not WOT. Or did Pontiac install wide band O2 sensors on the Fiero ;-) Ross Myers ------------------------------ From: Chief Date: Fri, 30 May 1997 11:32:52 -0400 Subject: CCC/cam ??? I want to install a hotter cam on my 84 Monte SS CCC Q-jet. My car has a MAP, knock, and O2 sensors. What is the limiting factor on cams working well with the computer. Is it vacuum? How much lift, duration, etc. can I run without causing problems? I have read in some mag about using a vacuum pump to keep vacuum up to run power brakes, etc. Would this help out a cam that is a little too big? Unfortunately my car isn't fuel injected, so I have to work within the constraints of the computer. I have an aftermarket chip to install also if that would help with a hotter cam. I appreciate the wide range of topics discussed on this list and am glad to be a member. Thanks to all who host the list and web page! Ed Hilker aka "Chief" 84'SS - 700R4 ------------------------------ From: Todd King Date: Fri, 30 May 97 09:24:00 PDT Subject: Re: GN "bashing" <<< Saw a 1986 (I think) GN for sale, with about 20k on it for $22k. Seen prices anywhere from $19k to about 45K depending how little mileage, whether its a GN or a GNX, etc. >>> Prices for low mileage GN's are rising as one would expect from this historic car, despite what some of the V8 crowd thinks. Ultimately this car will bring a very high price. Plus they were not stamped out by the millions like some cars. Some GN owners are already beginning to receive notices from collectors who wish to buy 'em all up. <<< While its a great car, and I've always enjoyed seeing them, its way too much money for what ya get. After all, one could paint a used Buick Regal black and buy the neat emblems, and supercharge a Chevy 350 and keep up real well :) Its the old "If it looks like a duck, walks like a duck, hell, must be a duck . >>> Hey, mid 10's with a street 3.8L V6, untouched factory block and bottom end, ported factory iron heads, mild hyd cam, larger turbo and torque converter, larger intercooler is pretty hard to beat for the money in a 3500 lb car with AC, etc, and makes for a pretty stout "duck" if you ask me. This street car went 10.20's in Bowling Green last month. Not too much to be ashamed of there. But seeing is believing; why don't you drive that air conditioned, supercharged 350 street car on over? I know a few turbo Regal "ducks" who'd be more than happy to quack for ya' Fred :-) Todd_King@xxx.com ------------------------------ From: talltom@xxx.com Date: Fri, 30 May 1997 10:37:22 PDT Subject: RE: DIY_EFI Digest V2 #183 Buick?? Not much performance??? Hate to burst your bubble, but nobody EVER beat my 59 lesabre off the line in the 60's(tore up 7 dynaflows, but never lost, factory 4000 stall speed!) Might want to tell the folks at Kenedy-Bell performance about how buicks don't perform, they've got a display case full of trophy's, the first coming from a 59. Partial clue, 455 Buick weighs 100# less than 454 Chev. Happen to have a 70 Gran sport Ram air 455 4speed lurking in the neighborhoo that I suspect could give a GN a good run for it's money. Will admit that GN can be modifyed to out perform easier though. Neither one are much at high speeds(150) though. Just for history's sake, there have been some rocky mountian hillclimb cars that were midengine automatics with the 3.8 buick turbo as the platform eng. Made 800-900 hp on alchol at 3 bar. They had the damn thing setup so that if it dropped below a certain rpm it died. something happened and they got below the critical rpm and it killed. If it hadn't been for the goofy ign. they'd have won, they were a LONG WAY ahead. I believe the cars was fabricated by the Peterson Bros. Old Buicks Kick butt! Might also add that I was going to buy a new GNX in 87, until they told me the only color they were available in was black. I was living in Phoenix at the time, and was not going to own a black car. ------------------------------ From: Alain Toussaint Date: Fri, 30 May 1997 14:36:38 -0700 Subject: Re: CCC/cam ??? keep an eye on the lobe separation angle !! too close (i.e.110 degree and less) and it drive the computer nut !!! especially the knock sensor,it think there is some detonation !! hope this will help ! Alain ------------------------------ From: Bob McElroy Date: Fri, 30 May 1997 16:50:25 -0500 (CDT) Subject: Re: CCC/cam ??? At [Fri, 30 May 1997 11:32:52 -0400] Chief wrote: > > I want to install a hotter cam on my 84 Monte SS CCC Q-jet. My car has a > MAP, knock, and O2 sensors. Chief, Since you appear to be retaining the stock feed-back carburetor (sometimes called an abomination, although my respect for the unit continues to grow), you should be able to use any streetable cam without much problem. On another list I subscribe to, there are reports that the stock fuel delivery system is able to provide sufficient fuel and air to a 455 Olds, in place of the stock 307 Olds. Apparently, the biggest limitation to retaining the complete stock setup is the lack of ignition advance curve tuning in the stock form. However, it is possible to compensate by burning a custom PROM to give you any desired advance curve. I've been considering upgrading the stock 307 in my '86 Cutlass, but after learning the above information, I'm currently considering building a mild 455 to replace the 307 altogether. FWIW - An Oldsmobile big- block will bolt right up to small-block Oldsmobile engine mounts and accesories, making such a swap ~much~ easier. Bob McElroy Home: rmcelroy@xxx.net Work: rmcelroy@xxx.com Manufacturing Engineer Midcom, Inc. Waverly, IA ------------------------------ From: "D. T. Kelly" Date: Fri, 30 May 1997 18:08:01 -0500 Subject: Re: O2 sensor fooler Ross, That's a good question, and I can't argue with you either way. Perhaps you can tell me. When I have a scan tool hooked up and floor it, I still get a reading and the status does not change to open-loop. I must admit I was under the impression the ECM monitored the O2 reading at WOT, and my scan tool seemed to bear that out. Am I missing the boat, here? Keep in mind this engine is a HO Quad4 from a 1990 Beretta GTZ. Wouldn't it be wise to always monitor the O2 reading...especially at WOT? Tim > > Seth, > > That sounds interesting...I could fool around (not literally...well, > > sorta) with my Quad4 Fiero. I don't think they richen it up enough under > > full throttle for some reason. > > Tell him to start coughing! > > > > Tim > > Correct me if I'm wrong here, but the ECU is only interested in the > O2 sensor O/P in closed loop, not WOT. Or did Pontiac install wide > band O2 sensors on the Fiero ;-) > > Ross Myers ------------------------------ From: peter paul fenske Date: Fri, 30 May 1997 17:37:07 -0700 (PDT) Subject: Re: ALDL Interface Hi Mark. It is in tango schematic form. Software which is used in our school here. Sorry but when I can some time I will convert it to another form. GL:peter At 07:44 PM 5/29/97 -0500, you wrote: >At 12:08 AM 5/22/97 -0700, you wrote: >>Hi All >> >>Seems I made a tiny error in my schematic and omitted one >>of the base resistors. >> >>Here is the corrected one. >> >>Ps i will post the c code for the comm prog in a bit >> >>CUall:peter >> >>Attachment Converted: c:\eudora\attach\ECMCOM.S01 >Peter, >Hi, I've been watching this list for some time now and early on I saw a >schematic for a pc to ALDL interface but my printer was down and so I >figured I could always get it back. Well I'm not able to find it. Then I >read your message about your interface and Hooray!! Me thinks "Here we go". >However I can't seem to find any source for the Tango schematic converting >software. I did find something called Tango at www.npac.syr.edu/tango which >I beleive is a sort of super universal converter. Is this what I'm after? >Please help. Thank you for your time and keep on coming with the work you've >been doing. It sure will save me steps when I do get my interface going. > Thanks > Mark O'Hara > moh@xxx.com > > > ------------------------------ From: Mark Glicksman Date: Sat, 31 May 1997 00:03:18 -0700 Subject: Re: Buick 3.8L V6 Roland wrote: > > Does anyone know where I can get specific information about this > engine. Specifically, casting numbers for each year. Also, has anyone > attempted to convert an older carburated 3.8 to FI (non-turbo). > > RTS Hey Roland, I don't know how much it will help you but I have the spec's for the 1987 Buick 3.8L V6. I have this information with and without turbo. What info do you need. It should all be in my 87 service manual. VTY Mark Glicksman mglicksm@xxx.us ------------------------------ End of DIY_EFI Digest V2 #184 ***************************** 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".