S63 exhaust
Planning on doing a stage 2 tune on an s550 and have a s63 exhaust front section. I will do a 3" stainless steel from the h.pipe back.
Are the cats metal inside?
Will this application work?
Are the connestions to the turbos the same?
Exhaust sizes
Stock s550 looks to be 2.5"
Stock s63 looks to be 2.75"


