Another post about my DEK that is going in. I already ordered a NEW EGR valve and BTP valve, or whatever its called, from Nissan for the install and all the gaskets as well.

My question and largest consern right now is:

Can I totally do away with the EGR system to keep the intake stream alot cleaner ?? I would like NO codes as well, but not sure if thats possible.
I live in a Cold Climate so I wouldnt wanna do anything that would screw up the cold starts. Does anything occur, EGR related, thats crucial when starting the car when its cold ??

Anything you can tell me would be great. Anyone that has done the totally EGR removal. I hate the EGR system and i really dont need it for emissions cause I get it done anyway.

-matt

 

i have a 97 maxy with 2001 dek. I have no egr using the 5th gen ivac. Cold start sometimes it won't start, have to give it gas for a bit only when its really cold something you just have to deal with. For the egr i just took off the egr temp out the header and connected it and just put it around my brake lines to keep it out of the way. It use to give a code for egr temp but now its all gone.

 

By the way, I will be using the Pathfinder TB

I dont want a cold start issue, what-so-ever!!!

-matt

 

I removed the EGR on my setup. Cold start was always a problem for me even when it was 80 degrees out. It usually took 3 to 5 seconds of cranking plus helping it idle for a minute or two. I'm not sure if that could have been corrected with some trickery of the ECU. Then I removed the IACV and the problem got more pronounced. I just live with it. Race cars are supposed to be a bia to start.

 

Did away with mine as well when I did the VI swap & 5th gen TB. Mine has cold start issues as well but I'm not sure if it's really from the EGR or not. I just welded the EGR temp sensor in the pipe coming out of the exhaust mani so I wouldn't throw any codes for that.

 

Good idea on welding in the temp sensor. I hadn't thought of that. But because I run a 95 ECU I have no codes anyway.

 

Welding in the temp sensor in the manifold will yeild wrong readings anyway. The temp sensor is located at the bottom of the feed tube after the air has come out of the manifold and gone through the system.

-matt

 

I think the egr affects the cold starts because I am using 5th gen IAVC with working egr and I have no cold start problems.

 

I dont think it does figuring that the EGR doesnt work at idle or at boost. Only works between like 2,000 and 4,000 while cruizing. Has really nothing to do with startup, from what I gathered. It only brings in exhaust gas to cool down combustion temps but if your using high enough octane gas, you should be safe. Im still not sure

-matt

 

Well my EGR is blocked off, all components are still in place, i get a CEL, but no cold start issues...

 

For my current Mevi setup, I also have sealed up the EGR slot with a good size turn-nut. The EGR still bolts onto the same place fine with everything else plugged in. Never had codes and never had problems.

Before I plugged EGR in the MEVI, the whole inside of the intake Chamber would be filled up with black charcoal film that's kinda hard to clean off. I had to flush seafoam once a month to maintain its clease as good as I can. After I plugged up the EGR hole, the intake chamber is always clean, even dustless, but only with a hint of engine oil; I guess that comes from the PCV. Other than that, Plugging the EGR is the ultimate solution to keep the Intake Chamber clean.

I am also running the setup with a Pathfinder Throttle body. I never had problems with cold start, but our coldest temperature down here is only 28 F. Only thing is that the idle rpms are pretty high upon startup, and it takes about 2 minutes to fully warm up. When I had my stock setup, it only took a little bit more than a minute to get the idle rpm down to 700rpms.

Hope this helps.

 

Huh, just noticed that in the FSM. Guess I wasn't paying close enough attention when I removed the USIM. So I guess the temp sensor really isn't needed???

 

is the temp sensor u guys talking the one that goes into the EGR guide tube? cuz im doing 00vi install and putting the 5th gen egr guide tube into the 4th gen egr. and the tube has a hole that seems to be for a sensor of some sort.

 

yes it is...

 

and the 4th gen guide tube has the same sensor in it? meaning i can just remove the sensor from the 4g egr tube and put it in the 5g egr tube?

 

You should