DIY_EFI Digest Sunday, 17 December 1995 Volume 00 : Number 006 In this issue: Re: RE: re: Reading the crank and OBDII (Camaro) Re: Re: 67f687 chip ... See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: "Brian Warburton, c/o Turbo Systems Ltd" Date: Sat, 16 Dec 1995 15:16:45 Subject: Re: RE: re: Reading the crank and OBDII (Camaro) Hi, My name is Brian Warburton and I run a small (2 man) company in the UK producing engine management systems for aftermarket use. I was a consultant at Ford Motor Co. on EEC-IV software design from 1986 to 1994 and used to be reasonable knowledgable about OBD-ii. Unfortunately I seem to have forgotten most of it now and only have an email-type Internet connection so can't browse anything. I'd like to take you up on your offer if at all possible : >As a last resort, send me an e-mail request and I'll >reply with the EPA rule as a long=180,000 byte file. > Thanks very much. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Brian Warburton, "Still searching for the perfect curve....." email: bwarb@xxx.net Advanced Automotive Electronics Ltd, Van-Nuys House, Scotlands Drive, Farnham Common, England. SL2-3ES ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ------------------------------ From: BradyEng@xxx.com Date: Sat, 16 Dec 1995 13:25:46 -0500 Subject: Re: Brad, You probably won't like what happens to the throttle response when you move the TBI unit to the end of a longer tuned manifold. A dyno may or may not tell you that you're making more torque, but the seat of your pants will probably be disappointed. You also may wind up with mixture distribution problems and horrible emissions because you're using a manifold that was not designed for wet flow. If you run good gas (92 octane pump) and keep the boost within reason(4-6psi) you shouldn't have problems with a published 9.5:1 compression. This also assumes you can optimize fuel deliviery(mixture and distribution) and spark timing. You would probably like the characteristics of this motor more than a lower compression higher boost setup. Some ways of lowering compression without new pistons would include a cam with more duration (10 more degrees of duration costs about 0 .5 points of compression), thicker head gasket (there is usually not much here), and/or porting the combustion chamber to unshroud the valves. Are there other heads available for this engine with larger combustion chambers?. The best advice I can give you though is to sell the car you have and buy the turbo version. Why try to make something almost as good as a factory turbo, when you can focus on improving the turbo version? In general, turbo cars come with premium suspensions, brakes, upgraded cooling systems, upgraded engine components, transmissions etc. The cost savings of starting with the cheaper car are an illusion, even if you don't value your time. I'm not sure what the emissions laws are in your end of the country, but if they have an inspection program the modifications you're considering will smoke the resale value of the car. If you don't have much money to spend, and want to really fly, buy a motorcycle. Good Luck, and have fun with it whichever way you go. SBrady ------------------------------ From: fridman@xxx.ca (Robert Fridman) Date: Sat, 16 Dec 1995 20:51:21 -0700 Subject: Re: 67f687 chip ... > Andrew wrote: > > >The location is: > >ftp://cim.cim.swin.edu.au/pub/uploads/aden/ > > > >the files are: > > > >67f687.pdf (binary) > >67f687.ps (ascii) > >67f687.zip (binary) > > Andrew, > Are these files also on the WWW page? I don't have access to ftp. Maybe > you could just email me the 67f687.pdf file. > Thanks, > Bryan Zublin > bzublin@xxx.com > I put the postscript file in the diy_efi www pages. Try: http://www.cpsc.ucalgary.ca/~fridman/diy_efi/component_info/ RF. - ------------------------------------------------------------------------- 83 R100 DoD 749 Robert Fridman 84 320i fridman@xxx.ca ------------------------------ End of DIY_EFI Digest V0 #6 *************************** 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".