Hi, I have read about problems they can cause with boost etc if they are damaged so would like to know what revision valve I'd have already as been looking at purchasing revision G..
My car does make a slight tshh dump valve sound when I let off the revs but at the same time I think it pulls well and also have a 3" de cat down pipe fitted so could it be down to that?
My car does make a slight tshh dump valve sound when I let off the revs but at the same time I think it pulls well and also have a 3" de cat down pipe fitted so could it be down to that?