Breaking up sometimes at WOT, Mircotech w/ GT35R

MolotovMan · 05-08-2014, 08:33 PM

Back story on my car:
I was getting together parts to turbocharge my GTUs and found a great deal on a 397WHP vert so I bought it.

I got very limited paperwork on it but here is what I know:
Put together and tuned at Speed1
It has a Microtech(I think it's an LT-10S but I haven't pulled the carpet to look)
Bosch Coils in stock location
S5 TII block, street ported
GT35R Turbo
Adequate fuel(AFR's are in the 11's when it happens)
Stock spark plugs w/ less than 5k on them
93octane with Water Meth after 12PSI
Idemitsu pre-mix 1:1
I get gas at the same Sunoco gas station

The car runs great for the most part but since it's been getting warmer, when the car is warmed up after I've been driving it for a while and boost hard or go WOT it cuts out intermittently. It's less of a bogging and more of a feeling like the mixture is not igniting and it's never a similar pattern. When it was 50/60 degrees out I had no trouble. I first noticed it at the drag strip and it killed my time!

I haven't dug into the issue that much yet but I'm suspecting it's the spark plugs or coils.

What does it sound like to you?
If it's plugs, what do you suggest running?

Thank you in advance.

05-08-2014, 08:33 PM	#1
MolotovMan GTUs Join Date: Mar 2010 Location: Woodbridge, VA Posts: 14 Rep Power: 0	Breaking up sometimes at WOT, Mircotech w/ GT35R Back story on my car: I was getting together parts to turbocharge my GTUs and found a great deal on a 397WHP vert so I bought it. I got very limited paperwork on it but here is what I know: Put together and tuned at Speed1 It has a Microtech(I think it's an LT-10S but I haven't pulled the carpet to look) Bosch Coils in stock location S5 TII block, street ported GT35R Turbo Adequate fuel(AFR's are in the 11's when it happens) Stock spark plugs w/ less than 5k on them 93octane with Water Meth after 12PSI Idemitsu pre-mix 1:1 I get gas at the same Sunoco gas station The car runs great for the most part but since it's been getting warmer, when the car is warmed up after I've been driving it for a while and boost hard or go WOT it cuts out intermittently. It's less of a bogging and more of a feeling like the mixture is not igniting and it's never a similar pattern. When it was 50/60 degrees out I had no trouble. I first noticed it at the drag strip and it killed my time! I haven't dug into the issue that much yet but I'm suspecting it's the spark plugs or coils. What does it sound like to you? If it's plugs, what do you suggest running? Thank you in advance.