I'm new to this forum but I figured I would ask for help since I have searched many hours online but have found no solution.
It only sputters out if 1. It's warm (exterior temp and engine temp) 2. Boost builds past 7psi.
If the car is cold I can start it, let it warm up to operating temp, and it will build boost normal and pull hard. However after around 10 minutes of driving if I accelerate hard enough to build boost it will sputter. It seems to be around the 7psi mark (gauge reads .05 bar)
I can also park the car and let it sit for 5 minutes or so, and it's like it hits some magic reset switch and it will drive and build boost as it should...but same thing happens after 10 minutes of driving.
Only mods at the moment are:
- SPT intake
- Invidia down pipe
- Invidia exhaust
- Mishimoto intercooler hoses
- Perrin manual boost controller
Car is currently tuned for 16psi
Fresh oil change
Car has 60,000 miles
Did a boost leak test and there appears to be none
Cleaned MAF (car had a k&n filter on when I bought it so maybe MAF was damaged from filter oil?)
No CEL light
I am going to change spark plugs next.
Anyone else ever had a similar issue or know what might be causing it?