Sorry to ask such a basic question, but my computer is about to crash and searching was locking it up. Anyway, Every now and then, i get a huge back fire under WOT. I figure it may be my Delco o2 sensor as it isnt old, but it has had a few gallons of race gas past it. Also, car has a light throttle/load buck to it. Is a Denso sensor the best? If not what would yall recommend? Also, is a backfire (or an intake pop) hard on a turbo? TIA