y-pipe question

Discussion in 'SN95 V6 Mustang Tech' started by SilverBullet99, Apr 15, 2004.

  1. i no that the v6 stangs have FOUR cats on their stock y-pipe. has anyone ever tried or is it possible to remove two of the cats, and just leave 2 there? does it do anything?
  2. I removed my first two cats (precats), the secondary main cats are still there. The only thing i noticed is my sound and growll :D i did not notice any HP/Torq gain or loss. No engine check light has come out and i have been driving the car like that for a month now, AND I HAVE JUST HAD A STATE INSPECTION AND PASSED!!
    and I finally got the sound i was looking for check it out
    Tell me what you think, I got dual flowmasters 40 series in there :nice:
  3. it isn't that hard to pass tailpipe emmissions without a cat. It is the visual inspection that gets you.