Brought my car to dealership to try to get the codes FIXED not CLEARED i know 2 of the codes are o2 sensor codes which i had bought new ones for pre and after cat, the aftercat cleared after doing the battery thing but then my pre went and i changed it but the code never went away, now i have a pacesetter header high flow magnaflow catback and cat all streetlegal, can anyone give me any ideas on how to fix these imsick of looking at a CEL and the third code was some circuitry silinoid or something they said my B&M shiftkit could be causing that but long story short they erased the codes for me for a small fee of $90....(which i coulda done for free at autozone) and sent me on my way as my CEL re-lights half way out the parking lot any help would be appreciated, thanks.

just because the cat is street legal doesnt mean it wont set off a CEL

thing is it was on (CEL) before i installed all that stuff after putting a new sensor on =(