im gonna make a trip to see scott siegel in about a month to get my car tuned. im getting an invidia dp, ssqv bov, ecu, and should i get headers or no since i still have the stock turbo but also im getting an ultimate racing turbo kit in a few months after my car breaks in. and anythign else i should get before i go get tuned? thanks.. and does it matter if i go catless?