chevyrules85

when i build my motor, i was planning on getting headers with out the provisions for all the emissions crap, and deleting the air pump and the egr and the ac, my question is what problems will this make? i think it will make my check engine light come on, so when i get a tune, can i just get that part tuned out?

JakeRobb

Yes, you can get the EGR and AIR systems disabled when you get a tune.

Disabling emissions control systems on a car makes it illegal to drive on the street. I believe that's true for all states. If you live in a state that doesn't do inspections or emissions testing, you'll probably get away with it. If not... you will probably not.

whyrun

Is there any HP gains made by deleting the air system or does it just clean up the engine bay..

mdenz3

No, there are not any power gains, and only a small weigh savings. There is also no power gain from removing EGR.

With a larger cam EGR system do become redundant, which is why some vehicals don't have them.

chevyrules85

yeah and im going with an le3 setup, but with the air and egr i really just want to get rid of them because they just clutter up the engine bay, and they just plain look bad

if i get them disabled when i get the tune, will it affect the way my motor runs?

also i know i can get the ac bypass pulley from like auto zone, but where can i get the air pump delete pulley?

Injuneer

Your AIR pump is not driven by the serpentine belt.... its electric.

bombebomb

If you already took the converter off, you do not need the AIR. Just something to think about, if you did take the converter off.

chevyrules85

yea my converter is already gone, i didnt know it was electric i have a 3rd gen also and just kinda figured it was belt driven, so i think i will pull all that crap out when i pull my motor

MTBSully

your car is a 95 and thus an obd-1. deleting air and egr should not throw a code, assuming you leave the egr solenoid hooked up. No perormance gains, just cleans up the engine bay. The only reason i deleted mine was becuase my headers didn't have the emissions fittings. Plus, here in MA, all obd-1 cars no longer have to pass emissions

dStruct

Actually so much as removing the AIR pump fuse in the engine bay will throw a code.. Although I think when I tested this it didn't throw the code until it reached closed loop, and you can just disable the AIR pump system all together with TunerCat, thus no code.

Personally I'm from Socal and living in AZ where we have emissions testing in both places so I have both my AIR and EGR still "installed" but my daily tune doesn't turn them on. When I go for smog I just put my stock tune back on and hope my EGR still does something lol..

As for the 1LE AC delete pulley, when I got mine I checked with Autozone and only the dealer could get it and I had to supply them a part number and have them look the other way on the VIN.. but I got it.

chevyrules85

hmmm, i actually work at an auto zone, i can order the ac delete pulley and have it in 2 days or so....

Injuneer

Why would you remove the fuse? In the OBD-I system, as long as the fuse is there and "good", you will not get a code. Everything else can be removed... just not the fuse.

chevyrules85

so pretty much since my car is obd1 i can pull all this crap off my car, leave the fuse in place, and not have any codes and it wont affect the way the car runs?

Injuneer

100% correct. The AIR system only runs for 2-3 minutes at startup to help the cat(s) heat up. Don't forget to cap the connection for the air supply hose on the intake ducting, between the filter and the MAF. I think its a 5/8" vacuum cap.

dStruct

That's funny I work at Autozone too lol, yeah back a couple years ago before I worked there I went in and they didn't have anything for it at all, so I went to a dealer I think I paid around $50 for it..

That's great to know, I just figured if you disconnect the fuse and it throws a code that removing the AIR blower itself would have the same effect. Man you're just full of all sorts of useful stuff, thanks. =)