EGR Valve Replacement

[Khronik]

Alright almost every post I see says just hack it up and delete it.

I dont want to run the delete and never pass emissions in case of moving and/or selling to get a TT..
Is it really that hard to replace without pulling the engine? Has anyone here replaced the EGR themselves?

[es.biggs]

You can do it with the transmission removed. I've heard of people doing the delete with just the plenum off, but it's gotta be hard. Realllllly hard.

[marty1mc]

I haven't done it, but I have seen posts of those that have. It is possible to get out without pulling the motor. But, I think you will end up pulling the upper plenum. The tubes are what everyone hacks to get out. They just are too intertwined in the rest of the mess back there. It is a pain, but I believe that if you don't try to take out the bolts, but leave them in the EGR assembly, it is easier.

Good luck.

[xclusivez32]

It is going to be a headache, i deleted mine with the engine in the car with just the intake removed and it wasnt very fun. I did end up cutting some of the piping to get it out idk how I would have got a new one in and installed properly without taking the engine out. Good luck what ever you decide.

[BigTDogg (MA)]

You can pass emissions with no EGR, BTW

I should say you can pass a sniffer test with no EGR, but you'd fail a visual in Cali if you had a d!ck inspector.

LOL @ "d!ck inspector"

[marty1mc]

Yea, we only have a visual here in NC. No emissions testing for anything prior to 96. But, even with the visual, the engine bay is so busy and there is so much hidden they can't find the stuff anyway. About the only thing they catch is test pipes...

[DCaff300ZX]

No EGR hasn't failed me yet in Wa. either, even passed an EXTREME team visual one year I had some problems with a d!ck inspector!

[es.biggs]

You can pass emissions with no EGR, BTW

I should say you can pass a sniffer test with no EGR, but you'd fail a visual in Cali if you had a d!ck inspector.

LOL @ "d!ck inspector"

Are you sure man? Removing the EGR system would cause a richer idle, because there is less air recirculated into the combustion chamber. Rich condition = unburnt fuel - increased hydrocarbons and carbon monoxide, correct? Maybe it wouldn't be enough for the sniffer to pick up on, I dunno.

I live in NC also, and we only have the visual inspection, for now. 'Til the EPA finds out how dirty our air is, then I'm in for some trouble

Yea, we only have a visual here in NC. No emissions testing for anything prior to 96. But, even with the visual, the engine bay is so busy and there is so much hidden they can't find the stuff anyway. About the only thing they catch is test pipes...

Marty, if you ever have any trouble with inspections, hit me up on here. I have my license, and I may or may not be able to hook you up.

Disclaimer - DMV if you are reading this, please take note that my NICO account was hacked a min ago, and I did not post this message and it was posted by some rebel and I do not know him. I would never do such disrespectful things to the almighty DMV!


sike.

[BigTDogg (MA)]

Are you sure man? Removing the EGR system would cause a richer idle, because there is less air recirculated into the combustion chamber. Rich condition = unburnt fuel - increased hydrocarbons and carbon monoxide, correct? Maybe it wouldn't be enough for the sniffer to pick up on, I dunno.

I live in NC also, and we only have the visual inspection, for now. 'Til the EPA finds out how dirty our air is, then I'm in for some trouble

Yup, I'm sure. Passed MA sniffer with my old 91 TT with no EGR. I did have full OEM cats, but I did have down pipes. I also drove around for 20 minutes prior to get the cats nice and hot. IIRC, just need to retard the timing a few degrees. There's a more info on TT.net.

As for your other comments... you could always PM him

[marty1mc]

Not to rain on this, but I don't think it's accurate. EGR is never engaged at idle. You are probably thinking of the AIV system. If that's deleted, a richer idle is generally the result. Aftermarket ECU's eliminate this circuit altogether. EGR's purpose is to reduce nitrogen oxide and is introduced when the system is running strong. That way the introduction of exhaust gases won't affect power. At idle, EGR can cause stumbling or stalling.

[es.biggs]

That's right man! I had my definitions confused lol. From what I understand now EGR is only active between WOT and idle, so most emissions testing wouldn't even pick up on it

[marty1mc]

^Actually, emissions testing depends on the state. Some states actually test for this and run the car at different rpms to test. North Carolina never did so it wasn't an issue.

[es.biggs]

Haha I know...I had to write a 16 page paper on emissions, epa, different forms of testing, dynomometers, etc. it was horrible. But I learned a couple of things

[Khronik]

Alright so if they rev the engine and the EGR is failing, it will pick it up?

Im prob moving back to ABQ and they do this testing there, not sure whats up with my EGR but I get a EGR flow malfunction code that comes and goes before/after having the stealership "connect the solenoid" as they claimed.

any idea on what would cause that code to appear randomly?

[z32Odoom]

I payed a friend to do the change for me. He tried by just pulling the transmission. Then couldn't get a bolt tight when putting the new one on. Then had to pull the engine anyway.

Moral of the story. Pulll the engine and save yourself half a headache