Quote:
Originally Posted by ErvGotti
Porting the head will give you a smoother better quality flow, but carbon build up will kill that withing 2000 miles. With tunes like Cobb with access to the Vanos values you can adjust the cam timing and duration that will give you more than enough head flow than the stock turbo can handle.
It's already produced, I can't remember who but I someone on E90 post is running it.
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Someone's actually running a functioning HPF manifold? I thought that thing was vaporware.