Race Chip GTS black (For B58)
Anybody have experience with this or jb4? Someone is willing to sell me the race chip gts black for the same car for 380(Negotiated down from 500) But I am unsure of how exactly these things work to make your car faster? Currently have AA catted downpipe installed, Dinan intake on the way(considering cancelling since I found out the stock box is already good).
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