has anyone bypassed there cats

[atomicgoofball]

HAHAAH Guruerror, i was just thinking, WOW soo many threads this necessary!???

anyways, you can delete the cats and put in straight pipes and drill a bung for the o2 non fouler, then put the o2 sensor in the non fouler to keep the codes from popping up. The exhaust may end up sounding raspy as hell and may not be worth it.

I would suggest just replacing the cats, or if you wanna go after market, get long tube headers and a full exhaust set up.

[HUMTECH]

You can remove the cats if you replace the post cat o2 sensors with o2 sensor simulators(do a google search) If you have to have the truck smog tested where you are it will fail though

[adamw89_2000]

we have no smog test here, i wasnt looking for preformance gains with this, i was looking at not spending the additional cost of buying new cats for no reasons.. i can spend that $$ elsewhere to get hp gains or what not.. im still not sure on the simulators... ive ebayed, googled, yahooed and everything else and there is no for sure answer if it will work on an h2 being they r late model vehicles... so ive still not got the answer i need. what are the oxygen sensor foulers????

[adamw89_2000]

ok just read up about non foulers... some people put 2 on each o2 sensor if there are still getting a light with just one... on some sites they say it tricks the computer and can cause the vehicle to actually run lean or rich( i cant remember which one) thats def not what i need or want! has anyone done this and hasnt seen a drop in gas milage?

[Magnacharged H2]

Just buy the Magnaflow universal cats they are about 80 shipped off amazon. you must weld them in cut out the old cat.

[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.