2001 Tahoe Cat Rattle.. Options?

[rlsaltou]

hi, i have a 2001 tahoe lt that i recently bought, im thinking the cats are breaking apart on the inside.. i was wondering what my options are? i like loud exhaust but straight exaust just gets annoying.... also i dont want it to throw any codes on the computer.. i was just wondering if there is a way to just delete the cat without messing up the computer.. i was gonna buy magnaflow cat back but now its doing this... any input would be helpfull.. i want to start on it asap but i just dont know what to buy ...

[rlsaltou]

Anyone have the same rattle problem? I've never done anything with the newer fuel injected stuff..do high flow cats makethe computer throw codes? I got the exhaust cut off right before the muffler right now. I'm guessing that's not enough back pressure.. what size muffler should I put on there to make enough back pressure

[rlsaltou]

seriously no one has any advice? i need to get exhaust on here before winter and the cats actually have rust holes in them.. what i want to do is buy some long tube headers and get black bear tune but idk if i got that kinda money... i just want a set up that my check engine light wont come on.. ive been searching on the net but its so full of worthless information..

[redvett]

All OEM OBD2 cat's are hi flow. Just buy the replacement cats and have them installed.

[rlsaltou]

if im gonna spend that kinda money ill just buy some longtube headers with a y pipe.. we dont have emissions where i live.. i plan on getting a black bear tune at some point in time it just needs exhaust... like NOW!! haha its irritating to drive the way it is

 

anyone run o2 sensor simulators or know where to find them? someone mentioned this to me...my dad works at a parts store and i get a good discount on stuff and cats are rediculously priced i could buy headers for cheaper that come with a y pipe.. my biggest fear is the check engine light coming on and it going into limp mode

[Bish]

On my 01, I thought the cats were rusting our but it turned out to be a loose heat shield on the exhaust manifold. If it is the cat, I would agree some long tubes would be a huge upgrade for not that much more than cats.

[redvett]

Be aware of several things. The "LS" engines do not run well without back pressure, lack of BP kills fuel economy and midrange torque especially with a heavy truck like yours. You still must have the two front O2 sensors for fuel management. Replacement Cat's are about $50 each a Summit not a bad price.

[rlsaltou]

high flow cat through summit will do the same as not having them for the whole backpressure deal..

 

im sticking with longtubes to y-pipe to some sort of muffler???? to single exhaust to stock location..........and they rattle and leak terribly when cold all in all i just wanna get longtubes for the deeper sound and ill be getting a tune next spring if not sooner

[rlsaltou]

and im already getting less than 10 and got nothing in mid range... its cut off after the cat... no back-pressure besides the rattly leaky cat .... haha i planned on having exhaust on it by now but when i ask ppl what to do on these newer computer controlled vehicles everyone shrugs there shoulders.. or they go all "tree hugger" on me and complain about the ozone.... forest fires generate more pollution a year than cars do... and why not where i live there is no emission visual or sniffer

[redvett]

Any Cat thats EPA approved will pass emissions and help back pressure but you will need a complete properly sized exhaust system.

 

 

high flow cat through summit will do the same as not having them for the whole backpressure deal..

 

im sticking with longtubes to y-pipe to some sort of muffler???? to single exhaust to stock location..........and they rattle and leak terribly when cold all in all i just wanna get longtubes for the deeper sound and ill be getting a tune next spring if not sooner

[rlsaltou]

I don't care about passing emissions they don't test where I live and its gonna be more of a winter daily driver off road vehicle anyways...