I just had a 3" magnaflow exhaust installed with the Y pipe mod. What would it sound like if I cut out the 4 stock cats and had 2 magnaflow high flow cats installed? Would it mess up my sensors and make my truck run like crap and also would it make my truck way too loud? Does anybody have this setup?

Jake

 

A couple people have this setup done. Talk to Mike over in the Chips forum. He sells some Magnaflow cats that are compliant with the newer F-150's. I'm gonna buy a set for mine after the Holidays.

-Flea