LT1-LT4 Modifications 1993-97 Gen II Small Block V8

EGR Delete

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Old Feb 26, 2011 | 09:20 AM
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Default EGR Delete

Quick question: I'm getting a set of race headers as most do and deleting the EGR and smog pump and such. My question is do you have to tune all that out to keep it from throwing codes?
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Old Feb 26, 2011 | 09:58 AM
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Originally Posted by rich5368
Quick question: I'm getting a set of race headers as most do and deleting the EGR and smog pump and such. My question is do you have to tune all that out to keep it from throwing codes?
EGR needs a tune yes, AIR does not (on OBDI cars, just leave a good fuse in the system).
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Old Feb 26, 2011 | 11:24 AM
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What generally happens without a tune after EGR delete? Just did it on my bird and cant afford a tune right now. No thread jack intended sorry.
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Old Feb 26, 2011 | 11:43 AM
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Assuming you blocked off the EGR properly (tube, valve, vac line), you'll get an SES light and the fans will constantly run. There won't be any other adverse effects.
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Old Feb 26, 2011 | 01:04 PM
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95% of the time my formula doesnt throw a code for missing egr. if it throws a code, the lights back off the next time i start the car.
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Old Feb 26, 2011 | 02:10 PM
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OBD I does not need a tune for either.
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Old Feb 26, 2011 | 02:14 PM
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Good to know. Can't hurt to tune it anyway. Was just wondering if I needed it to be a priority.
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Old Feb 27, 2011 | 09:20 AM
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Originally Posted by gregrob
OBD I does not need a tune for either.
For OBDI?

Not saying you're wrong, but I've seen the EGR delete set countless SES lights. Am I missing something...?
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