Good exhaust setup for a 5.4L?
Hey guys. I have a 03 f150 supercrew 5.4L and I'm wondering what's the best exhaust setup. Right now I have stock exhaust with cherry bomb extreme muffler and 3" tips. They have been on since the truck was purchased by grandpa right off the lot in 03. The tips are rusted on the bottom and everything, and the donut gaskets on the manifolds are worn out and making a ticking noise. So I figured it's time to upgrade the exhaust completely. I'm gonna go with bbk shorty headers, 2.5" piping, two magnaflow high flow cats #94106, true duals, two flowmaster 40 delta flows 2.5" single in/single out, and 3" by 18" tips. Will I gain any mpgs and hp at all? And will it have a good sound to it?