Mar 8, 2006 #1 CO Cooper-5TH Member Joined Feb 3, 2006 Posts 18 Location Dallas Texas I added 4" exhaust on my 2006 F250 It changed my truck. It has better bottom end and it looks like it will get about a 1&1/2 miles per gallon better. I will keep you posted :shock:
I added 4" exhaust on my 2006 F250 It changed my truck. It has better bottom end and it looks like it will get about a 1&1/2 miles per gallon better. I will keep you posted :shock: