[Fraxum]

I am thinking about just the Stainless catback with my M6 NPP.

Anyone have this and kept the stock cats?

If M6 and the sensored cats are in, where would the CELs come from?

Also with the stock forward cats, NPP, and the Stainless CB is the exhaust really loud with the flaps closed just driving around?

I want to enjoy both modes. Track Mode at Atco should be fun.