Very interested in this. There's a few sets of M6 mufflers on ebay... So it seems affordable.
Compromises? I'm thinking one is the restriction going back to 2.5". Losing the electric valve. What else?
How is the sound - could you describe more? I'd love an m5 exhaust, but I'm not alone, so I doubt I'll find one at a reasonable cost.
I'm really looking for something with just a lil more attitude, but with a lot more when you jump on it...
2012 550i xDrive, DG & Black, M-Sport, ARS, Conv, Lux, Cold, HUD, Prem Sound, SAT.
Dinan Stage 2, springs, M5 mufflers, and 303M/Michelin PSS