Thanks everyone for their input.
One clarification: I'm asking this because of my observation of the lack of performance difference between a tubular header vs. a cast log manifold. The equal-length headers offer smooth transitions and collectors, while the cast iron manifold makes poor (90...
I have seen many site detailing the process of exhaust scavenging on NA cars, but never a turbo one. I would assume it works the same, but there are a few things I'm curious about.
The pressure in the exhaust manifold gets considerably higher than atmospheric. Doesn't this change the resonance...