Hi, hi have an Volvo S60 1.6T and I'm wondering what size or inches should I put in te exhaust Sistem. Sorry for the English. Thank u

 

Are you not looking to use factory sized parts or are you thinking of going to a larger exhaust for performance reasons? Most performance applications use a 3.0 inch (76mm) pipe. I believe the factory pipe size is 2.5 inch (63 mm).