I finished building my VRT last year. It's a mk4 12v AFP motor using C2 42# tune and 42# injectors. Standard compression. The car has ran rough at idle ever since, it kind of sounds like it has a big cam in it. I have ran logs in VCDS and it seems to run very rich at Idle and very lean under boost. I was hoping the fuel trims would stabilize overtime but they continued to be just as bad and eventually led to a washed piston ring. The car has two known issues. First of all, I used the stock plastic intake manifold and because it sits right above the exhaust manifold, its getting very hot. I'm