Iv been thinkin about changin up the exhaust on my truck, and waswondering if anyone had deleted the back pair of cats and ran the mil elimantors they make for mustangs to clear any codes? im not lookin to do a full true dual, just open up a lil more flow, and a little more sound. any help would becool, thanks.

 

if you only delete the rear cats you shouldnt have to mess with the o2 sensors being that they are before the cats.

 

what year truck?

 

04 - 05 4 cat systems do not minotor the rear cats so you can remove them without any worry.