yay or nay.... I already have one installed in my car and I don't really notice the difference. However, am I suppose to hook up a vaccum line to it? TIA Sal BTW, I believe it the control pressure from a turbo Audi...however, I'm not really certain. -- Email LIST problems to: scirocco-l-probs@scirocco.org. To unsubscibe send "unsubscribe scirocco-l" in the message to majordomo@scirocco.org