I need help.. my2001accordv6 j301vtec v6 keps throuwn o2 code for the sensor b4 the cat. I have ceramic headers, high flow cat, and full Tababe catback system installed 20k ago. thought it was the 10% ethanol gas they got herre in GA as the code clears right after I bought a new sensor. now the code is back up...

.
I was told I need to buy a high performance o2 sensor? if true, where?
also told that the ceramic headers and high flow cat is not cleaning the emissions that is why the OEM sensor went bad or gives a false reading.
Please help as that bright check engine light is driving me nutso plus the performanc has decreased.
hubbardpkh1@windstream.net

please help