Any feedback on what the best sounding exhaust system for a V-10 is? I've heard that changing the exhaust system can improve milege also.

 

The V10 is very difficult to tune exhaust wise. Most "home made" systems sound bad. Some say like a sewing machine on steroids or a sick 6 cyl. Stick with a name brand cat-back system. Borla, Dynomax, Gibson, Banks, Flowmaster just to name a few. You won't see huge numbers with a cat-back alone. The best bet is cat-back, headers, & K&N. These combined should give you about 1 mpg better. Look in the Superduty section here or over at www.ford-diesel.com in thte gas section for more info.