Exhaust tailpipe colour
#16
My RUF GT2 has a built/upgraded motor and turbos, obviously remapped, high flow race cats and exhaust... On the track the inside of the exhaust tips/pipes are a greyish color, and that's with 93 pump gas, I don't run leaded or unleaded race gas.. My car is A okay, stout and healthy as can be, I wouldn't be worried