I just started to notice this problem last night. During the day it has been in the 70's and the car runs fine full boost through all the gears. Last night when it got cold out(40-50) the car started to have problems. I have never noticed this before. Even throughout winter this was never a problem. I can hold full boost until around 6k and then it starts "cutting out" for seconds at a time but otherwise holds full boost. I'm not sure how to describe it. Its like a "hesitation". Do you have any ideas what is causing this?

My setup is:
Greddy TD04
Tial 35mm external on 9psi
D16y7 with y8 intake manifold

If you need more info please ask.

Thanks,
Zach

 

has it just been tuned or retuned recently?

my retard buddies street tuned when it was warm outside and now when its cold it runs like crap...

 

It has not been tuned since last year.

 

Check your plugs. Denser cold air might be just to much for the gap.

 

what size gap do you suggest in colder temps for his setup?

 

I run 7re ngk's at .028". How many miles do u have on your plugs.
Just make sure that your plugs are not out of spec and check condition

kev

 

I changed my plugs maybe 4k ago. I can't remember the specs.

 

a car will run slightly more boost in cooler weather, what you are experiencing is more than likely overboost, i had a car that did exactly the same until i lowered the boost slightly, then it was fine

 

this is the exact reason why an A/F guage is an important tool