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View Full Version : egr block off plate?



FadeToBlak121
03-21-2009, 07:00 PM
(not really sure where this thread should go)

wouldnt it cause spark knock?

freakv6
03-22-2009, 10:52 PM
No reason for it to cause knock. If their is a leak it could cause a weird idle, and crazy lifts, but shouldnt cause knock.

FadeToBlak121
03-23-2009, 11:29 PM
i thought that egr was for putting a small amount of gas back into the combustion chamber to help reduce spark knock.. could be wrong.

freakv6
03-24-2009, 09:02 AM
Not gas, but exhaust. It stands for exhaust gas recirculation. I have heard it can help reduce partial throttle knock, but thats not when people really concern themselves with knock (usually only at WOT)

FadeToBlak121
03-25-2009, 08:14 PM
sorry when i said gas i meant exhaust gas. so there really shouldnt be any side effects to ripping out the egr?

freakv6
03-25-2009, 09:30 PM
no sir...aside from loosing a mpg or so. I took mine out a while back and have had no ill effects ( not even the partial throttle kr). It also helps to keep the inside of the engine a bit cleaner, as exhuast is no longer put back into the intake.

FadeToBlak121
03-26-2009, 12:35 AM
hmm alright. does it come with something to fool the computer or something? because wouldnt losing the egr throw a code?

Crazed98Camaro
03-26-2009, 07:17 AM
hmm alright. does it come with something to fool the computer or something? because wouldnt losing the egr throw a code?

Yes it does throw a code....and you need to get it tuned out of your PCM.

freakv6
03-26-2009, 08:58 AM
Yea you can either get it tuned out with hp tuners, or you can buy an egr sim from zzp. The egr ses doesnt effect performance, so it wont hurt to leave it on if you waiting for a tune.

tkoforpresident
03-26-2009, 09:37 AM
the EGR also helps keep combustion temps lower which is important to note.

steddy
04-02-2009, 08:22 AM
Honestly, what the exhaust gas does is lower the NOx (nitrides of oxygen) for emissions. Anything that burns has this, even cigarette lighters. This also helps to ensure that the Cat doesn't get way too hot when converting exhaust gases. When there's a problem and too much exhaust gas gets in, like in cold weather, driveability suffers. I had the block off plate on my rig for a little while. It smoothed out A LOT. Just got tired of the SES light and was getting ready for the rebuild. The new PCM has the EGR taken out, so the plates'll be back on. Probably brazed.

freakv6
04-02-2009, 09:05 AM
the EGR also helps keep combustion temps lower which is important to note.

duely noted.