Ok I am a Newbie, lol, so first I own a 98 Z28 and i have long tube headers, ORY-pipe, Flowmaster catback, 3.73s, LS6 intake and ported TB. Instead of getting O2 sims i was gonna delete the codes from my computer but now i am unsure if I have bad front O2s because of several DTCs for the O2s. The codes that come up are for Bank 1 sensor 1 and bank 2 sensor 1, are these the DTCs i need to delete or are these the fronts? any help would be greatly appreciated. Thanks, Doug