Taking my upper plenum off and then milling down my lower plenum, porting it and making a custom upper. Do I need the EGR or can I just hack it off or route it somewhere else.. dont really want it but I heard if removed you run the risk of melting your pistons??

 

it helps stabilize your cylinder temps.
Also recirc's fuel rich gases.

Will it do any real damage? no.
COULD you see some drivibility issues? maybe.
That and the constant SES light... that alone would annoy the hell outta me.

 

Hmm...what year is your car? 2.8 so you should have the vacuum controlled EGR, but I'm not sure when they changed it.
The light only comes on if you have the electronic EGR (disabled). The ones with the vacuum hose on them won't trip the SES, ecu doesn't know if it is working or not.

If you don't have to worry about emissions and having it look stock, just take it off and block off the hole on the exhaust manifold, and cap the vacuum line.

I had to leave mine on 'cause of the "visual, emissions equipment" inspection, but it is blocked off at the plenum. Haven't noticed any problems (9500 miles).

 

yea it should be vac controled. My car seams to like it hooked up.

Maybe your confusing it with another part?

 

I'm pretty sur ethe 3.1s got th edigital/linear egr. I think it's also the same one th e3.4s got.

 

Its an 86' 2.8 in a Camaro with an auto trans....

 

again, if you are willing to deal with the issues arrived from doing so... go for it.

 

Well I got emissions testing up here in CT so I should Probably leave it on.

 

the ECU will throw a code for the vacume EGR mine does all the time cause the one in my dont work and when ever i check codes the only one i get is the friggin EGR code also mine has a t off of the line from the solenoid to the EGR valve that has a sensor attached to it. the ECU will also look for a drop i exhaust temps at the same time it command EGR if it dont see that it will throw a code. well thats what my book says but it could be wrong. wouldnt be the first time.

 

No that is correct, the ECM will look for small changes when the EGR is commanded, sometimes the ECM is set-up to throw a code for minor glitches, some not. Take the '88 Z24 ECM, the EGR can be completly disconnected for the vehcile and it won't throw a code, but in '90 (which actually uses a different EGR) The Z24 will throw a code if even a small change is detected.

 

hey if you end up modifying your middle intake manifold and making a custom upper oneone let me know, I live just outside of UCONN and would like to see what you do with it up close.

Dave

 

Im making a whole new intake setup. Actual manifold n all as soon as I get some responces on my other post... beleive the topic is HELP!! if yall wanna go check it out.