So no one has heard of GPM? I guess instead of buying the whole 6 ill just buy 4.... I may go for the dual exhaust and let you guys know. Supposedly its pressured right or something...
I buy GPM products from y RS4 3ss... I get them from a guy in Hong Kong and they are pretty cheap including shipping. He ships in about a week.. compared to most US seller who take up to 2 weeks