i was wondering where i would be able to get o2 sensor loops so that i can trick my o2 sensor into thinking that i have a cat. i have a 1999 with the 5.4. im tired of the computer leaning my damn truck out and messing my plugs up. and that check engine light tends to get a little annoying at times. so where can i get one and for cheap preferably.

 

I cut my cats and kept the sensors - no light. My guess is you went with shorties instaed of the recommended longtubes.

 

my light came on after i cut the cats out. the shorties just made it flow better and made it louder. either way my check engine light came on cuz the cats are *******ing with the o2 sensors.