I have RPW headers, piggyback, High flow cat, 2.25 exhaust, CAI, ported IM, gasket matched head, and ported TB. My question is....My car seems to be running rich, since my cat deteriorated, and is giving off a code : Bank 1 sensor 1 was reading incorrect, which is the fist O2 sensor. Now could that be the header, O2 sensor bad, piggyback? I'm just about ready to get a new O2 senor but dont want to spend $300 on one. I'm just looking for ideas on this. Thanks

 

Acctually its reading that the heated part of the sensor in bank 1 sensor 1 is not working. Any ideas?