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!