Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

OBD-II vs. Aftermarket System

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Old Feb 7, 2004 | 11:44 AM
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Question OBD-II vs. Aftermarket System

Hello. I wanted to know, would it be better to get an aftermarket fuel system or stay with the stock computer and tune that. I mean, can it do what an aftermarket system can when used with LS1 Edit? I'm not concerned about the real time, or tuning while the engine runs. Also, where can I find the burner to burn the stock computer if I decide to stay with the OBD-II? Thanks for the responses.
Old Feb 8, 2004 | 08:30 PM
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Can someone please help me I would appreciate it. I would also like to know if there is anything else I need and where can I get it from?
Old Feb 8, 2004 | 08:36 PM
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IMO opinion stick with the stock computer...

I think superchipz in australia or something can do a conversion for boosted applications that use a 2 bar map sensor..

A lot of people in australia, specially some people within efilive are doing greatthings by changing the actual code to the GM PCM...

The PCM is more than capable and is hardware wise better than any aftermarket computer available...

in stock form it can see around 6psi boost or so...
Old Feb 10, 2004 | 08:46 AM
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Here's a good description of what an aftermarket system has to offer for the LS1 platform.

http://highperformancepontiac.com/tech/0404pon_dfi/
Old Feb 11, 2004 | 04:22 PM
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I wanted to know if the ACCEL system would work the gauges, the tranny (M6), the anti-theft system, etc. I would also like a website to investigate further on the features. Thanks again! I want to make sure that when I build my combo it will be perfect. that's why so many questions. Thanks
Old Feb 12, 2004 | 01:16 AM
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do you have a website for the 2 bar conversion... this would be a godsend!! any info would help!

Chris
Old Feb 12, 2004 | 07:01 AM
  #7  
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You'd want to retain the stock PCM for trans control and some of the gauges. You might want to give the guy referenced in the article a call, he's done that many times.

Joe Overton
Lethal EFI Performance
4012 Jefferson Park Rd., Dept. HPP
Powhatan, VA 23139
(804) 598-9261

Here's a link to download the ACCEL software. You can play with it offline without having to have an ECM connected. (Caution: it's about a 9 MB download).
Old Feb 25, 2004 | 12:51 PM
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Um the link dosen't work, sorry it took me a while to get to the post but ive just been looking up tuning info and turbo info in another site. Can you make the link work so I can see the software? Thanks!
Old Feb 25, 2004 | 01:13 PM
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Originally posted by moyam01
I wanted to know if the ACCEL system would work the gauges, the tranny (M6), the anti-theft system, etc. I would also like a website to investigate further on the features. Thanks again! I want to make sure that when I build my combo it will be perfect. that's why so many questions. Thanks
Most of the gauges are driven direct from sensors, not from the PCM. The only problem is the speedo. I run the stock PCM in parallel with an aftermarket computer, and the stocker handles VSS, IAC, PASS-key, etc. Also ran the emissions stuff - EGR, AIR and EEC - when all that was still functioning. You don't have to bypass or eliminate your stock PCM. You just move the critical functions like fuel and spark control to the new ECU.

Not sure what you would need to "control" with the M6... surely you don't still have the "skip shift" active.

You might want to consider the MoTeC ECU.
Old May 29, 2004 | 03:00 AM
  #10  
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Any updates on this??? i know of a guy that did a 2 bar map conversion HARDCODED in the LT1 PCM... but i do not think he is releasing it to the public.
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