Well about a week ago I went from being able to do WOT pulls in any gear and get no knock to now getting up to 5 degrees. I know that heat soak can cause knock and its been really hot here for three weeks straight but I wasn't getting any knock for the first two weeks of the hot weather. I also tried putting in octane booster but that did nothing. I just bought a cobra h/e and it should be here this week. Does anyone have any idea of what my problem could be.

 

my first guess would be that your tune doesnt like the cooler weather

 

I get the bad knock in the mornings when its still cool out with the sun down and the same amount of knock with it 95* and up

 

Looks like your tuned needs to be tweaked again.

 

I was thinking maybe I needed some finer tuning. I just don't know why for the drastic change. I just had it tuned in july and the weather hasn't changed that much.

 

No cooling mods and a 2.7... Your going to need ot suck some timing until you get a dual pass or meth.

 

^^^Well I just bought a cobra h/e its just not here yet.

 

Your going to need more than the Cobra H/E. I didn't notice much of a change at all when I installed mine. Meth or a Dual Pass are the way to go!

 

stupid question.. but what does "wot" stand for?

 

wide open throttle

 

With a Cobalt: Wide Open Throttle
WIth a VW: Waste of Time j/k

I have heard it referred to as Warm Operating Temperature as well, but most gearheads on here seem to use the Wide Open Throttle version