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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
the EGR is a good thing if its working right.....it doesnt detract from performance. if you notice an increase in performance when you disconnect either its plumbed wrong or the internal diaphram is broken
When I first bought my '81... I discovered someone had actually plugged the inlet to my egr with a bullet. After I did some research here on the forum I decided to remove the plug and replace all the vacuum lines and now I'm running with the egr working and I noticed a slight improvement with performance. Maybe it just sounds like it's running smoother? From what I learned here, I say keep it.
To see if it is working you can reach a finger up under it from the bottom,increase the engine speed rapidly then and you should be able to feel movement on the diaphragm.This will let you know if it has vacuum to it and whether the EGR is working
EGR = Exhaust gas recirculation = helps burn exhaust gases = this is good
Make no mistake about it-an EGR valve is good for one thing,emissions. I removed my EGR valve in 1984 and if my memory is correct the EGR valve recirculates unburned gases back into the combustion chamber under acceleration. Any time one dilutes the incoming intake air with pollutants, the engine's ability to make its full power HP is diminished. Not only does the EGR valve dilute the incoming fresh air with unburned gases, those gases are VERY hot, increasing combustion chamber temperature, which on our cars, caused knock. The cars from the 70's that had EGR valves also had a tendency to knock, contributing to high water temperatures. In today's cars with computer technology, these issues are non existant but if you are interesting reducing emissions, by all means retain it, if not, remove it. Every wonder why guys that build engines don't include an EGR valve or why aftermarket intake manifold manufacturers offer the manifolds with or without an EGR provision? It is NOT because the EGR valve has no effect on performance. Just to be clear!
Last edited by jb78L-82; Oct 23, 2010 at 09:11 PM.
So don't want to bring back up the topic as to whether one should remove the egr valve or not rather my question is how much of the system (including EFE) can be removed once the decision has been made to go with a non-egr intake (i.e. edelbrock 2101)? I understand you can just plug the tube from the egr tvs but can that be removed and just plug the spot on the Qjet?? There is alot of tubing that I would like to remove and I am just curious as to how much of the system can be taken out. That is, where do I put the final plugs?
