Confused with piping for TD's
Should I run 2.5" right after the headers, or do people down size as they move back?
Should I get a X-pipe 2.5" on all 4 ends? (Part #10791)
Looking to us Magnaflows for the muffler... Either the Race Style or the 4X9's. The Inlet/outlet are either 3.5" or 4"... So do I use bigger pipe here, do I need to order a muffler with a 2.5" Inlet/outlet?
any help on the pipe sizing stuff?

