my exhaust goes from a 53mm downpipe to 67mm after the first box......
just wondered what kind of difference i could expect from a larger diameter downpipe (all 67mm)
as i understand i will loose some low end power but gain some at the top of the revs??
any ideas of how much ect? will my butt dyno even notice?
just wondered what kind of difference i could expect from a larger diameter downpipe (all 67mm)
as i understand i will loose some low end power but gain some at the top of the revs??
any ideas of how much ect? will my butt dyno even notice?