#106387, "RE: Anyone use a HKS Hi-Power exhaust system?" In response to Reply # 1
Originally posted by VelocitaPaola Just curious... I thought your FS thread regarding the Tanabe exhaust said you were going for a custom 3". Did that not work out?
Its not for me. Its a buddies 420a that we are building this winter.
#106389, "RE: Anyone use a HKS Hi-Power exhaust system?" In response to Reply # 3
just an interesting fact that i found on road race a while ago; "HK$'s idea of a big exhaust. Starts off pinched to 2 1/4" to a 2 1/2" pipe and resonator." "After the resonator it expands to 3"."