Still running the fuel injection? If so, you actually WANT that front O2 sensor in there.

 

Yes but im going to carb tho. and i havent had 02 sensors on the truck ever. i bought the truck in pieces when i was 13 years old and built it from practically nothing. im 18 now and it still has never had o2 sensors. Doesnt throw any code and runs great. and the cats are deleted completly. Full straight pipe off long tube headers. It is loud as hell. I attached a video of it running if you want to hear how it sounds

 

Heres another of me revving it when it was painted red

 

How are you NOT getting codes with the O2 sensors missing??

 

couldnt tell ya lol. Never have tho