when you go to 2 of the high flow cats what do you do with the 02 sensors cause there is one in front and one behind the cats on a 2000 f150 w/ 5.4l and sould i go with trus duals or how sould i do it thanks

 

get a down pipe made at your local shop. at my shop i think it was like 10 dollars a foot with as many bends as needed. give him the high flows to and tell him what you want. Exhaust guys at the shops have had some werid things asked for! both my down pipes with flanges and o2 put on it cost me 80. I gave them my stock Cats and got 20 dollars off so it would have been 100.i installed everything myself he just made the pipes.

 

Put the 02s back as close to ware they were as you can and you should be fine.

Phil

 

And if you get a check eng. light for the rear o2 sensors then just get O2 simulators. Summit racing carries them.