Help me delete my EGR
Thread Starter
Race Director
Joined: Aug 2002
Posts: 17,367
Likes: 1
From: Kentucky
Help me delete my EGR
I'm getting ready to install my LT headers and have been debating on whether or not to delete my EGR. Well, 2 days ago I set a code 32 and this made the decision for me. Is this what I need to do to delete it:
1-replace EGR with block off plate
2-connect vacuum hoses running to it
3-burn a chip that doesn't look for it
Is that it?
86 L98
1-replace EGR with block off plate
2-connect vacuum hoses running to it
3-burn a chip that doesn't look for it
Is that it?
86 L98
Last edited by hngacurv; Aug 2, 2004 at 11:44 PM.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by hngacurv
I'm getting ready to install my LT headers and have been debating on whether or not to delete my EGR. Well, 2 days ago I set a code 32 and this made the decision for me. Is this what I need to do to delete it:
1-replace EGR with block off plate
2-connect vacuum hoses running to it
3-burn a chip that doesn't look for it
Is that it?
1-replace EGR with block off plate
2-connect vacuum hoses running to it
3-burn a chip that doesn't look for it
Is that it?
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Can't say it's ever a great idea to remove something that reduces the combustion temps at cruise by about 500 degrees, especially if you have some miles on it. Burning a chip to ignore the code does nothing for the detonation it's likely to have and on some GM'S, there's some additional advance built into the tables for EGR, meaning that you run the risk of burning a couple of valves too.
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
Originally Posted by SunCr
Can't say it's ever a great idea to remove something that reduces the combustion temps at cruise by about 500 degrees, especially if you have some miles on it. Burning a chip to ignore the code does nothing for the detonation it's likely to have and on some GM'S, there's some additional advance built into the tables for EGR, meaning that you run the risk of burning a couple of valves too.
Burning Brakes
Joined: Aug 2001
Posts: 1,038
Likes: 15
From: Brick- Next to the land of Mojo NJ
i would like to see something........stock with EGR (and stock tune) VS stock with EGR delete (and stock tune)
then also a street motor than can pass emissions with and without EGR again
i bet the performance difference would almost be nill (with VS without)
with a stock tune (and EGR delete) it might even be worse if you get into pinging.....PCM will pull back timing
i would leave it on (your motor/tune is designed for it)
then also a street motor than can pass emissions with and without EGR again
i bet the performance difference would almost be nill (with VS without)
with a stock tune (and EGR delete) it might even be worse if you get into pinging.....PCM will pull back timing
i would leave it on (your motor/tune is designed for it)
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Advanced
Joined: Feb 2004
Posts: 51
Likes: 0
From: Mission Viejo CA
I, too, would leave it intact and operational. The EGR system, by design, doesn't affect idle or WOT operation (that is, when working properly). As previously mentioned, it reduces pinging by reducing combustion temps. at "normal" speeds. Ported vacuum switches keep EGR from operating at idle speed thus keeping the idle "smooth". At WOT, there is insufficient manifold vacuum to "lift" the EGR valve against its internal spring diaphram.
