After installing the 1/2" spacer my RPMs became somewhat rough and now that its cold, my car stoles sometimes while.
Usually that happens when I drive on the highway at high RPM and then put it in neutral.
Happened twice so far.

What to do?

 

Sounds like you might have a leak coming from the plenum area. I would check around for some loose hoses or perhaps something got caught in between the plenum and not letting it sit properly.

 

hmmmm
damn, its too cold outside to play around under the hood
:-(

 

you better reinstall it.. you prolly have a bent gasket or something.

 

ouch.
gasket seemed fine.
will inspect it over the weekend.

 

I would just raise idle, it will almost definitely solve all your problems.

Nissan dealer can do it using the "consult" device

 

I wouldn't raise the idle.. this is a common issue and definitely sounds like a leak issue. check your intake tubing to see if it's loose, as well.

 

He is definately right!! Idle is too low and will sometimes stall the car when you put it into neutral.. It should go away after the ecu learns it.... Trust me.. Or bring to nissan and tell them to raise the idle by using the drive by wire, should be free(SGP's Mark educated me)..

 

Well it drops and then gets up to the normal level.
I am not sure NISSAN will want to do work under warranty once they see a Giant spacer there.
lol

 

Where in NYC are you?

 

Brooklyn, you?

 

Queens

 

Definitely a leak!!

I put my spacer on and didn't have to adjust anything.

 

if you ever come to BK let me know, i am down to meet.
I am right off Belt Pkwy.