MLC Stang said:It doesn't affect it in any way. The two systems are completely separate.
The "smog pump", actually called the AIR (Air Injection Reactor) pumps fresh air into the exhaust manifolds during the first couple of minutes of operation with a cold engine. The cats do not work until they are up to temperature. Injecting fresh air into them helps reduce emissions until the cats warm up and start working.
The EGR system recirculates burned combustion gases back into the cylinders to be burned again with the incoming A/F mixture. The purpose is to cool the combustion process which helps reduce certain emissions.
The two systems are not related.
One would want to turn off the EGR function in the computer if deleting the EGR.95COBRA241 said:I heard read about ppl wanting to also remove the EGR, but I thought that would make the car idle bad and also ping from those gases not going back into the combustion chamber.
That is absolutely not incorrect.CManT1914 said:Paul, EGR is inactive at idle and WOT, so technically it shouldn't effect the idle AFAIK. Somebody correct me if I'm wrong.
CManT1914 said:Paul, EGR is inactive at idle and WOT, so technically it shouldn't effect the idle AFAIK. Somebody correct me if I'm wrong.
Like JT said, the only real way to delete the EGR, is to delete it from the PCM as well. Custom chip, PMS, twEECer, they will all do it.
You might get some part throttle pinging due to no EGR, some do, some don't. If you do delete it, be prepared to run higher octane fuel in case you get pinging.
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