thank u very much, now im back to square one, not sure if i should drop the $100 on an aftermarket OEM spec catalytic converter, or a genuine honda o2 sensor(have a friend that works at honda that gets employee discount)... sucks, cuz if i dont guess right, got to drop another $100 had a friend who is knowledgable and does engine swaps took out my cat, he said it looked fine, looked better than the used OEM cat i bought, he said it was white and clear inside, he could see through the other side(light passing), but he said there is like a 1% chance something inside could be bad, he gently shook the cat, nothing inside broken. thing is i used to be slammed 4 inches on the ground, and my header had a crack in it, so i thought maybe the cat got hit around also, initially he thought maybe that caused my code 67(the crack in my downpipe), any extra air would mess up my air fuel mixture, o2 would be reading wrong. changed my downpipe(header), still have the CEL. now i got to guess, my car bogs down at high speeds, around 80 mph, doesnt accelerate well, so i thought maybe its my o2, cuz i heard if the cat o2 is bad, car runs like shi*, so now im confused