has anyone bypassed there cats

[Indy]

O2 sims are hard to come by these days. Retailers were forced to take them off the market, although you can still find some if you look hard enough.

I'd either get the rear sensors programmed out, or get some high flow cats instead.

[[__--MUD--__]]

These motors sound like an elephants ass w/ no cats and free flowing exhaust. People will look trying to figure out what piece of ****'s making all that noise.

[adamw89_2000]

i have mufflers on the truck, i temporarly removed the cats and replaced with straight pipe with still having my thrush mufflers. its load, almost to load specially when u get on it. i not forsure if i will by new cats or just make me some o2 sims...