EGR Removal on a 1G

[4TireFire]

How many of you are running block off plates instead of the EGR valve on your 1G?
Im thinking of removing mine cause its junk anyway, any downside to doing this mod?

 

[L2RTSiAWD]

No downsides except for a possible CEL.

 

[Black95GSX]

Only downfall is possibly not passing emissions.....

 

[1gTURD]

nox will go up (oxides of nitrogen) the combustion chamber will be hotter (not more lean.... hotter) personally i wouldnt block off the egr unless i had an bigger IC... but thats just me. you shouldnt get a cel in a 1g for blocking the egr. Mine isnt on, neither are 2 other blocked egr cars that i know of...2g is obd2 so if you fart it throws a light....

 

[steve]

Calf cars will get a CEL but not federal ones. I just cut a aluminum plate to replace the gasket and reinstalled the valve. I haven't noticed any increase in EGT's.

Steve

 

[4TireFire]

There are no emissions tests in my state so i dont have to deal with that,
I like to eliminate anything that doesnt serve a performance gain but can cause the car to run ill if it breaks! Thanks for the info guys, ill be making a plate this weekend, Maybe this will help with some of my idle problems.... but probally not

 

[dsm_dan]

Originally posted by steve
I haven't noticed any increase in EGT's.

Steve

as you shouldnt

egt stands for exhaust gas temperature, not combustion chamber temperature, big difference and that is why egt guages are not real good for fuel tuning

 

[steve]

Originally posted by dsm_dan
egt stands for exhaust gas temperature, not combustion chamber temperature, big difference and that is why egt guages are not real good for fuel tuning

You lost me. I assume that increases in combustion chamber temperature would be reflected in higher exhaust gas temperature. I realize the change isn't 1:1 but there should be some connection between the two. Please explain.

Steve

 

[dsm_dan]

Originally posted by steve
You lost me. I assume that increases in combustion chamber temperature would be reflected in higher exhaust gas temperature. I realize the change isn't 1:1 but there should be some connection between the two. Please explain.

Steve

http://64.4.18.250/cgi-bin/linkrd?_lang=EN&lah=24dab205decbb4e98be8cc81ce727d7b&lat=1047944960&hm___action=http%3a%2f%2fwww%2edsmtuners%2ecom%2fforums%2fshowthread%2ephp%3fthreadid%3d42533%26goto%3dnewpost
that explains it all

 

[steve]

Thanks, that's a link back to here.

Steve

 

[chrisAWD]

!!

 

[Vegas Smith]

yeah, i would think that the temps would go had in hand, almost. and i was under the impression that an egt gauge was an essential tuning option.

 

[Bohrn]

theoretically blocking it should be better for combustion tho, as the egr, by defenition, injects exhaust gas into the combustion chamber, mixing it with the nice, clean, dense intake charge. That can't be good for performance, or efficiency.

in practice, I don't know if it helps. I had to have my t-body off, and while it was, I blocked mine off. No probs, don't know if it is better or not. Have emmissions testing mid april, will let ya know.