What is the best cat back exaustbrandchoice for Mileage improvment?

 

well it all depends.you wont see much with just an exhaust. you can buy a flowmaster kit for hundreds of dollars or you can get just some mufflers and go to your local shop and have them bend up and hang the pipes for a much cheaper price. any good aftermarket exhaust will do, everyone has a different opinion on each one. for starters i would pick either gibson, flowmaster or the new cherry bomb system that just came out. then you have to decide what size tubing 2.5 or 3 inch. i went with the 3 inch because mine is a single cat back with no resonators. sounds just like a true duals.