#112521, "RE: Intake diameter size information" In response to In response to 0
Not sure, MB.
Why not feed the TB from a NACA atop the "power bulge?" The relative low pressure area at the peak of the bulge should offer a good supply of fast, smooth air to the duct, which would then feed the TB via short route piping.
PS - I "helped" with your intake manifold last night.
