I've been told that if I want to do away with the cats on my 2000 5.3 chevy,,that it will mess with the sensors and it wont run good. Has anyone here done that? I have a gibson exhaust,,just from the cat back...
I'm really just looking for more power, and Oklahoma doesnt do any vehicle inspections anymore!

 

You won't gain any power from removing the cats on an essentially stock setup.

 

why no power gains? It has the Wheatley tuning

 

You will gain 1-3hp by removing the cats on a stock setup. Not worth it and the trouble it will cause because you don't have the tune set to compensate for it and will require a retune.

 

would it be worth getting high flow cats? Mainly looking for better sound.. Have dual flowmasters on it now, 5.3

 

From what I have heard its not worth just removing the cats. If your going to go through all that trouble (including re-tuning your truck to run with out cats) its worth more installing a good set of long tube headers a new y pipe (if your going to still use the single tube exhaust) and then having it tuned. Way more gains.

 

like scoob said, the only reason u should remove the casts is if you are installing long tubes. the only other reason i would cut off cats without any other exhaust mods would be a clogged converter. The gains are just not there.

 

ok, thanks for the input. This summer its getting a cam and headers,, so maybe then different exhaust setup,, We'll see.