Originally posted by Studly:
Knife edging might also make a small difference, maybe, but the volume of air your engine is getting is the same.
Knife edging may make a considerable difference, I suspect. Brad's changes worked for the duratec, so let's just see what Mr. Davis's results are.
The volume of air may not be the same at all. Anything that produces turbulence is going to lose velocity and/or increase back-pressure, and then a lower volume of air per second gets through.
