Taking off my CATs, Re-Tune Needed?...

[86style]

i have a catted slp x-pipe. i am going to try the race pipes in place of the cats and see how it sounds. if i like how it sounds and leave the cats off, you guys think i need to go back to the dyno or you think ill be alright?

anyone?

-pete

 

[BoneCrusher]

Mine was still pig rich with no cats on the stock tune, but I would still put it on a dyno just to be safe.

 

[MTI LS1]

I didn't. Should not change it dramatically unless the cats were clogged when you had it tuned last.