Originally Posted by keavze
so...with rpm pipe should run shorter gears and torque pipe running taller gears?
in addition: a high rev engine shld use a torque pipe and vise versa?
all depends really i've used a 5 fin nova header with a nova 2630 on a max, and it was ok, but the crf pipe with long header felt better. some engines like weird combos you wouldn't normally consider. sometimes it pays to play around.