[igor335idct]

Good evening I just had a really hard pull on my car, while I was on full throttle quite a lot of smoke came out of the exhaust, I’m aware n54/55 are unknown for bad head gasket but checked oil and coolant, everything is ok, the car didn’t go in to limp mode and still has full boost.

However it is running abit lean at the moment due to afe air intake(haven’t remapped car since install) don’t know if makes much difference, it’s on stage 2+ 99oct.
Could someone help me identify the problem.

Many thanks