hey melman, i did a search for expedition exhaust & discovered you have the Magnaflow #14588 SI/DO (22" i think) on your expy w/custom pipes turned out behind the wheels. i want the same setup on my 2000 4.6L , i was wondering did you lose ANY low end torque? about the same or did you gain some? what about gas mileage, did it improve? is there any way you could post a sound clip?