DIY_EFI Digest Monday, 5 February 1996 Volume 01 : Number 032 In this issue: DIY_EFI Vendor List Re: Still more Questions .... IAC Ford MAF sensor more MAF sensor types Re: IAC Re: Ford MAF sensor Re: IAC newcomer Re: Bosch Mono-Jetronic Re: newcomer See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: orin@xxx. Harding) Date: Sun, 04 Feb 1996 16:48:28 -0500 Subject: DIY_EFI Vendor List Because of the problems that some of you had when I tried to send this as a file, I decided to make it a standard message and to send it that way. Please send me any additions/corrections so I can keep this up to date... After Market DIY_EFI Systems: (BASE system prices shown. Usually doesn't include sensors) 1. Electromotive, Inc. 14004-J Willard Road Chantilly, VA. 22021 (703) 378-2444 All prices ECU only a. HPV-1 Direct fire, Distributorless Ignition US$439 (4 Cyl) b. HPV-3B " " " " US$664 (4 Cyl) c. TEC-I Engine Management (Fuel and IgnManagement)US$1,500 (6 Cyl) d. TEC-II " " " " " " US$999 (4 Cyl) e. Software for the above US$150 - 550 2. Haltech (Australia) US Distributor Performance Automotive Electronics 2158 W. Northwest Highway, Suite 400 Dallas, TX 75220 (214) 831-9800 All prices ECU only a. IG4 Ignition Control US$480 b. F7B EFI system US$640 c. F7C EFI system US$680 d. F9 EFI system US$680 e. E6 EFI system US$960 2a. EFI (Haltech) Unit 7 130 Taren Point Road Taren Point 2229 Sydney Australia 3. Mr. Gasket 8700 Brookpark Rd. Cleveland, OH 44129 (216) 398-8300 Contact Mark Hamel (X488) 3a. ACCEL - Same address and phone 3b. Digital Fuel Injection (DFI)- Owned by Mr. Gasket 37732 Hills Tech Dr. Farmington Hills, MI 48024 a. 74040A Universal US$740 b. 74022L (Chev 350) US$900 c. Calmap software US$185 4. Emtech (Australia) 5. NOS/EFI Tech. 6. Holley 11955 E. Nine Mile Road Warren, MI 48089-2003 a. Pro-Jection US$600 - 1,000 7. Racetech Engineering Bay G 1007 55th Ave.,NE Calgary, Canada T2E 6W1 a. SDS (Simple Digital Systems) EM-1 8. Advanced Engine Management Systems Van Nuys House Scotlands Dr. Farnham Common Slough SL2-3ES England Phone: 01753-642019 Contact Brian Warburton a. Ignition Management System UK#395 b. Clubmans EFI system UK#495 c. Engine Management System (Ign & EFI) UK#755 d. Programming software - free with purchase 9. Plus 1 Micro, Inc. PO Box 1781 Lawrenceville, GA 30246-1781 a. InterACQ Orin Harding - Greensboro, NC ('74 MGB-GT - '79 MGB Roadster with Electromotive TEC II) ------------------------------ From: gavin@xxx.au (Gavin Walker) Date: Mon, 5 Feb 1996 09:28:34 +1100 (EST) Subject: Re: Still more Questions .... > >The MAF on OEM's is always placed very fare from the throtle body by doing > >this we have to realiase that we have the intake + the air hose that act as > >a resevoir after the metered air has passed the MAF, would it not be better > >placed as close as posible to the intake ??? And also why not just put it > >after the T-Body and calculate the real air density, since usually we have > >coulant heating the the T-Body. You don't want the MAF too close to the Throttle body due to the turbulence generated by they throttle. - -- _--_|\ -|- Gavin Walker / \ | \_.--.*/ <- Canberra, gavin.walker@xxx.au v Australia Phone +61-6-2167030 Fax +61-6-2167111 ------------------------------ From: dzorde@xxx.au Date: Mon, 05 Feb 96 08:18:18 Subject: IAC On the subject of the GM IAC(idle air controller) for the TPI engines. Does anyone know of a replacement, working of sensing the temperature or similar, ie. some sort of bi-metal spring system. The problem is that I need some sort of idle stabilisation on a TPI system but the ECU does not allow for control of the standard IAC. Is it possible to leave the IAC off all together? Any ideas will be appreciated. Preferably the parts should be available of Australian cars, since US parts are to expensive over here. Dan dzorde@xxx.au ------------------------------ From: orin@xxx. Harding) Date: Sun, 04 Feb 1996 19:33:55 -0500 Subject: Ford MAF sensor It is my understanding that the Ford E8ZZ-12B579-A sensor is rated at 891 kg/hr air flow or approx. 230 HP max...Does Ford have a similar sensor in the 110 - 130 hp range?? Orin Harding - Greensboro, NC ('74 MGB-GT - '79 MGB Roadster with Electromotive TEC II) ------------------------------ From: dn Date: Sun, 4 Feb 96 16:26:09 MDT Subject: more MAF sensor types Bryan Zublin wrote: > It would be great if we had some hard data on the web site regarding the > calibration curves of various MAF sensors. Until then, maybe start a > general info section. This would indeed be a useful resource. I'll try to fill you in with some more data on MAF sensors I've uncovered while doing research on the 555 EFI thingie, and add some to Bryan's list, after I have put it all together... Meanwhile, a couple of useful references I have found so far: Domestic Electronic Fuel Injection and Computer Systems Frederick D. Allen Prentice-hall ISBN # 0-13-218256-4 Pub 1988 This is a good general reference which describes sensors, ECU functions, etc, and give some troubleshooting info. Covers most systems used by the Big 3, but lacks technical (read "electronic") detail. Obviously written for the Engine Service Technician. The next general reference is actually several references. These are aftermarket parts suppliers catalogs, such as Carter/Federal Mogul, Standard, Blue Streak, Echlin, etc, who all manufacture replacement parts for ignition and EFI systems. These contain valuable references to make, model, and year, as well as in some cases OEM part numbers, etc. It is sometimes interesting to note how many models are covered by a few replacement part #'s, indicating that they all function similarly. A lot of stuff differs only in physical appearance, (perhaps an elbow on one MAF, but an identical one without an elbow, etc.) They generally also contain pictures of all the devices, cross references, etc. which are invaluable in selecting a goodie to fit your application. You can also, with a little perserverence, backtrack from some known application to find other makes, models, and years which use the same device. This is useful in junkyard searches. Again, however, they lack any technical specifications whatsoever, which is a pain in the kister. I got mine from my local auto parts store, I just went in and asked if they had any outdated catalogs kicking around. Ended up with a stack about a foot high for free. You could also probably request them direct from the manufacturer. regards, dn - -- - --------------------------------------------------------------------- Darrell A. Norquay Internet: dn@xxx.ca Datalog Technology Inc. Bang: calgary!debug!dlogtech!darrell Calgary, Alberta, Canada Voice: +1 (403) 243-2220 Fax: +1 (403) 243-2872 @ + < __/ "Absolutum Obsoletum" - If it works, it's obsolete -------------------------------------------------------------------- ------------------------------ From: walter@xxx.com (thomas walter x5955) Date: Sun, 4 Feb 96 20:04:54 CST Subject: Re: IAC Dan, On the IAC, I found the unit fitted in the BMW to fail in the OPEN mode. It allowed too much air to enter the engine (at idle the engine would rev to over 1200 rpm... the ECU sensing the engine would cut the fuel - dropping the rpm back, which the ECU would respond with a fuel flow again... ). Quick fix was a penny with a 1/8" hole drilled in it. This would limit amount of air the unit could pass, preventing the engine from doing its VROOM, VROOM trick. Long term fix was to repair the VDO box. The FET on the output stage was not fitted with a heat sink. With excessive heat and age the solder joint would fail. [Oh, I slipped off the hose to the IAC, fitted the -ahem copper slug- with a hole in it next to the IAC metal flange, and slipped the hose back in place]. Cheers, Tom Walter Austin, TX. ------------------------------ From: Fred Miranda Date: Sun, 4 Feb 1996 19:57:12 GMT Subject: Re: Ford MAF sensor At 07:33 PM 2/4/96 -0500, you wrote: >It is my understanding that the Ford E8ZZ-12B579-A sensor is rated at 891 kg/hr air flow or approx. 230 HP max...Does Ford have a similar sensor in the 110 - 130 hp range?? > >Orin Harding - Greensboro, NC >('74 MGB-GT - '79 MGB Roadster with Electromotive TEC II) check out the unit Electromotive uses on their Jeep kits Fred ------------------------------ From: arthurok@xxx.com (ARTHUR OKUN ) Date: Sun, 4 Feb 1996 21:58:34 -0800 Subject: Re: IAC You wrote: > > > > On the subject of the GM IAC(idle air controller) for the TPI engines. > Does anyone know of a replacement, working of sensing the temperature > or similar, ie. some sort of bi-metal spring system. The problem is > that I need some sort of idle stabilisation on a TPI system but the > ECU does not allow for control of the standard IAC. > > Is it possible to leave the IAC off all together? > > Any ideas will be appreciated. Preferably the parts should be > available of Australian cars, since US parts are to expensive over > here. > > > Dan dzorde@xxx.au > > the iac is just a little stepping motor gm bottoms it shut at start and then backs it off a a certain number of steps to control idle mixture air and also as a deceleration valve during throttle release closing. what sort of ecm are you using? ford uses a solonoid thats pwm to do the same thing but ive heard the gm stepper works better and smother as long as the valve lead screw is kept clean (i own a iac gm ). maybe i could design a little gaget using a pic16 up. ------------------------------ From: "Hans Hintermaier" Date: Mon, 5 Feb 1996 08:14:17 MET Subject: newcomer Haaallooo, i am an absolute E-mail and www. newcomer, so i dont know, how to get the mailing-list. Maybe you can tell me something about it. Thanks a lot Hans hiha@xxx.de ------------------------------ From: wrm@xxx.za (Wouter de Waal) Date: Mon, 5 Feb 96 09:38 GMT+0200 Subject: Re: Bosch Mono-Jetronic >So Land Shark a.k.a. Jim sez: >>Actually, the Uno is remarkably driveable. Handles _really_ well. Never had >>any problems at all, except this flat spot that crept in recently. > > OK, well .. let's fix that flatspot ... Have you checked the throttlepot?? > Now here lies the crunch. The manual I have sez "don't remove that pot, it's factory adjusted". I can't get a new pot, or even a new pot attached to a throttle body (Which I would need if the thing is factory adjusted). I'll have to buy the whole thing, including idle servo and injector. Now I'm sure that'll fix the flat spot, but I can get a carburettor for a third of the price. Lessee, R8000 = 200 cases of beer, what can _you_ buy for the equivalent of 200 cases of beer? Probably a new car :-) So if I remove the pot and bugger up the adjustment, I'm f*--ed. So now I'm trying to figure out whether that is the culprit. If I open the thing and find that the pot's OK, and then can't get it back together again, Hooo Boy, probably kill myself :-) Wouter - -- Wouter de Waal Phone : +27 21 683 5490 Development Engineer Fax : +27 21 683 5435 CCII Systems Kenilworth, South Africa ------------------------------ From: "Joachim Glasstetter" Date: Mon, 5 Feb 1996 10:39:45 +0000 Subject: Re: newcomer Hans, was meinst Du mit mailing list? Du willst dien bisherigen Briefverkehr der EFI Liste haben, odaer was? Bei der EFI Liste bist Du doch schon angemeldet oder? > Haaallooo, > i am an absolute E-mail and www. newcomer, so i dont know, how to get > the mailing-list. Maybe you can tell me something about it. Joachim ------------------------------ End of DIY_EFI Digest V1 #32 **************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. 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