EGR elimination?

stang_gt_1994 said:

Not computer tunning just need to richen the car up.

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No intended, but......

Sorry, in my opinion that is completely wrong. Like said before, the computer thinks the EGR is still functioning and adjusts timing and fuel accordingly. You will be running richer during normal cruise, which is NOT GOOD.

How would you richen/leab an EFI car without computer tuning (besides open loop)???? How do you change the spark tables without computer tuning. Part throttle a/f ratio is determined by the O2 sensors. You can't just add/trim fuel pressure because the computer will simply compensate.

The computer uses the O2 sensors to calculate your a/f ratio during normal cruise, which is what you will be at 95% of the time. Lets say the EGR is still hooked up & running, and the the O2's are at "X" resistance, which normally means you are oscillating around 14.7 a/f ratio. Since the EGR is still hooked up, you are actually at 14.7 a/f, and everything is hunky dory.

But the computer assumes that there is going to be a certain percentage of exhaust gases in the mixture. If you remove the EGR, the O2's will read "Y" resistance, because there is more oxygen present per CFM of exhaust now. So, the computer thinks it's running lean and adds fuel. Now, with the addition of the fuel, the oxygen sensors go back to "X" resistance, and the computer thinks this fine, because it assumes the EGR is still present.

So if you want to run rich and hot, go ahead. You will only burn out your motor.

Remember, the computer shuts off the EGR at wide open throttle, so removing the EGR will only complicate things & not give you any power. So part throttle cruise will be affected, which means 95% of the time the car will run rich.

Make the EGR fit or get a custom computer chip. Plain and simple.
Scott