I have a 93 z28. I just put the pacesetter LTS on and they have no air hook up. The car runs good. Should I remove the egr and put the block plates on? Or just cap the air tubes where it did hook up on the stock exhuast? It runs real strong thats why im asking if it will help out or not. And if so could i have a couple of tips on how to because shoebox shows for 94 and up. Thanks for any help, Jason

 

I ditched both of mine with my headers but the gains with either would probably not be worth mentioning. I did them mainly as "engine beautification". To answer your question: Since your headers don't have air hook-ups, I would pull the pump and lines out too. And yes, I would put EGR block-off plates on the back of your intake.

 

Im talking about the steel tube that hooks up on the passenger side stock exhuast manifold and the rubber line that goes on to the driver side stock exhuast manifold.

 

In the 93's, the plumbing for the AIR and EGR is in fact combined, and not the same as 1quickta described for the 94-97 cars. The AIR and EGR systems connect behind the back of the intake manfold, and the tube that runs from the passenger side exhaust manifold to supply the EGR valve is also used to flow AIR into the passenger side exhaust manifold.

From Streetlethal:





As a minimu, you need to cap off the place where the metal tube from #8 connects to the back of the intake manifold. Removing the EGR valve is optional. If you remove it, you have to cap it, and you need to cap the vacuum source on the drivers side of the intake.

 

instead of taking the egr off which i heard it doesnt help can i just block the passenger side of the intake im sorry im lost.

 

Sorry! My bad. I learned something new today!

 

You've got me confused now.

Do your headers have the connections for the EGR and AIR systems, or don't they? You said there are no AIR connections, so that would mean the metal tube labeled "P. Side Header" has nowhere to connect. If you can't connect that line to the header, your EGR system will not work. So leaving the EGR valve there is totally optional. Remove it and you save 1# of useless weight. Leave it connected and you don't need that blockoff plate.

In any case, you MUST block off the back of the intake where the pipe labled "Intake" connects.

Or maybe I didn't even understand your original question.

 

all i did was take the old stock headers off and put the new long tubes on with out the hook ups on the new headers so i have no hook ups for the long tubes. I want to know the best way to block off. or do i even have to block any thing off because i have been driving it and it runs good? The tubing is all still there in the stock location it is still hooked up in the back of the intake

 

Pull it all off.....block the ports.

 

Read what I've posted twice already. You need to block off the connection labeled "Intake". If you do not do this, the engine will appear to run fine, when the ECM is not activating the EGR valve (does not actrivate at idle, not used at WOT, not used above 3,600rpm). But when the ECM activates the EGR valve, you will have as large vacuum leak from the tube connected to the back of the intake. And if your EGR valve does not seal well, you will have a vacuum leak all the time.

If you're happy with the way it runs, and not concerned abuot a vacuum leak, just ignore it.

 

It could always run better!! if thats going to help i will do it Im going to put the block plates on. I just was confused there for a minute. Thanks for the help Jason

 

buy some egr block off plates and do it