I'm not sure I notice any James. I know someone with well over 400bhp on a 1.8T who always uses an OEM valve.
It just seems logical to me that the boost pressure should act against the piston, rather than than the side of the piston. It should make for a fractionally better response.
reversed mine today, does the little chirp thing, but i posted a thread on intermittant whoosing while on light throttle, this seems to have gone since reversing. holds revs ok and doesnt seem much different to me
My 007p was recently reversed and there is a considerably loud chirp when you let off the throttle. Not to my liking so will be changing it back to normal tomorrow. My boost gauge didnt work either, not sure why as it's T'd into the fpr.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.