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Would my ECM throw codes if I didn't use the EGR/ emission stuff?

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Old Dec 8, 2006 | 12:55 PM
  #1  
88TransAmFreak's Avatar
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From: NE Arkansas
Car: 1971 Camaro
Would my ECM throw codes if I didn't use the EGR/ emission stuff?

Just wondering,

It's a 1992 Camaro ECM and Wiring. Not going to use any EGR/ emission stuff. Trying to keep it as simple as possible.

Can I use the stock chip or is a custom burned one in order?

Thanks in advanced !
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Old Dec 8, 2006 | 01:27 PM
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TexasSilhouette's Avatar
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From: Colorado
Car: 1991 TransAm GTA 350
Engine: 350 SBC TPI
Transmission: 700R4
Stock ECM will want to have a complete car, else it will tell you.
Check Engine light will never go out.

Detonation will not be in check (by the EGR) so ECM will have to retard timing to reduce detonation (happens AFTER detonation is detected).

Since your timing will be retarded, your power will be decreased.
Since your EGR will no longer be keeping detonation down, your engine will detonate more (destructive).
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Old Dec 9, 2006 | 12:19 PM
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88TransAmFreak's Avatar
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From: NE Arkansas
Car: 1971 Camaro
Thanks for the reply. I guess I need to keep egr and get a custom chip for the other stuff I delete. I have a 1992 Camaro GM shop manual, I'll double check everything and make sure EGR is on my "keep" list.

Thanks again.
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Old Dec 19, 2006 | 09:53 PM
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From: Doghouse
Car: Pro Stadium Tough Truck
Engine: Buick V6 272 cu in
Transmission: TH350
Axle/Gears: Broken most of the time
You can certainly disable the EGR in the bin/ecm. This will require burning a chip which you should do yourself and refine the tune as you go. It will also require a few other tuning modifications but it is certainly in the doable scope of tuning and burning chips.

However, you might run into a smog law issue down the road.
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