OK, those with custom exhaust,or whoever wants to chime in...would it make a..
 

difference, or what are everyones experiences. I notice A LOT of exhausts go into a Y-Pipe just before the first muffler. To those with custom exhausts...1. Would it hurt (performance wise) to go into a y-pipe RIGHT AFTER the cats and run a 3in. pipe down the middle(where the two pipes USED to couple together)to the first muffler? I have an ABT muffler and planning a Borla or Flowmaster for the first muffler. But thinking of coming right out of the cats (2.25"?) and going into a y-pipe to 3in. to the Borla/Flowmaster. Please give feedback or pics would be great! Thanks