This Saturday I will be taking my 2002 WS6 M6 to have some parts put on, here is a list of what is going to be done. Keep in mind I only have a Borla catback exhaust system and the dyno will be on a Dynojet:
1) SLP Lid
2) Pacesetter LT Ceramic Coated Headers
3) TSP 3" Catted Y-Pipe W/ Magnaflow High Flow Cats
4) QTP 3" Electric Cutout
5) A custom dyno tune with wideband O2 to alter A/F ratio