Originally Posted by davsmith64
if u running EFI why use a dump valve?? when you get a loud better sounding chatter noise??
IMO i think that dump valves are gay even tho i had one on my old S2..
i run EFI on my ERST and would never ever use a dump valve again,, just go for the chatter dude.
unless you've got a roller bearing turbo then you have no choice but to run one

and i bloody hate then.