Discussion Starter · #1 ·
I've been reading up on here and seen alot of you guys have done the magnaflow 12256 muffler swap. That muffler is 1 in and 1 out, so I'm assuming your putting in a " Y " pipe before the muffler? I just looked under my truck and the muffler on my 07 is 2 in and 1 out. ????