I had a catback stainless IMCO Pro-Series Dual exaust setup put on my 2005 F150 with the 4.6 about a month ago and it is great. Before the duals the best mileage I ever got was 21-22 mpg on the highway at 72mph. After putting on the duals I have noticed an increase in torque and power,it will break the wheels loose on command which it wouldn't do before, and I recently recorded 24.8 mpg on a 300 mile trip with the cruise at 72.

Just wanted to pass on this info incase people are debating what system to get......

If you are looking for an exhaust that will give you a nice tone and give you power, torque and improved MPG I would definetly look into the IMCO systems.

 

Which model # do you have (mine is 7470)?

 

I had the model #7419 in Stainless put on so I could do 2 1/2 pipes...If I recall the 7470 has 2 1/4 exits?? how do you like the 7470??

 

stylin,

Not bad! Love the sound at idle\acceleration and definately feel a difference in performance.