Thread: Should I remove the resonator AND the cat?

I have a 3" Catless Downpipe and no resonator with the stock mufflers and it sounds very metallic at idle, almost like if you dropped a pop tab into an empty pop bottle and shook it a little bit. Also it sounds really raspy and crappy when you rev it. Keep the Resonator. Mine was gone when I got the car. I might even put in a cherry bomb one of these days to help with the raspyiness. If I want to be loud I can just click a button and my cutout opens. lol

P.S. If you do cut out the cat make sure to either get a 02 sensor simulator or retune your pcm because the rear 02 sensor DOES AFFECT THE FUEL TRIM!!!! I know most people on this forum thinks its only to let you know if your cat is good or not but I have a Service manual and it says right in it that the rear 02 sensor information fine tunes the fuel mixture. I will give you the page number and brand of the manual if anyone doesn't believe me.

alright, so i removed the u-bend AND the cat, left the resonator intact....and i gotta say the car sounds...well it sounds pretty frickin awesome! and considering it was a free job, im really happy...i also feel like the car got more powerful (u-bend delete?)...anyways, we removed the o2 sensor, and i was thinking of either getting a simulator (how much do they cost?) or just save up until I get either a FWI or CAI, then get an overkill or intense PCM....lemme know what you'd do!