ok so i recently started getting the check engine light on for p0132 on and off,the car would start shuttering (rpm decrease) and eventually turn off while i was driving ..now i thought it was the fpr ,fuel pump,or injectors..but it turned out to be a bad 02 sensor before the cat (bank 1) .. So i took it out sanded it down with a 500 gritt all around, on top and finally 1000 grit all around!! Thing looked brand new out of the box .. Check engine light turned off,shuttering stopped doesnt turn off anymore!!for now until i find a better 02 sensor (bank1) any recommendations ???!! I thought about ntk??