Originally posted by hobbsy
Somewhere in this process you would need to straighten out the intake track otherwise the 180 drgree turn at top of the intake pipe, 90 into the head and 90 through the intake port would negate any gain, a pressure wave would not survive that turn as the pressure from the YS plenum does.
Not true. Ever seen a header pipe on a helicopter engine? Some bend 270 degrees plus an additional 90 in the opposite direction before they ever get to the pipe.
John