Indy317 wrote:
I'm a little concerned about pulling our travel trailer out west and being able to pull up steep grades. I have a 2010 F-150 5.4L and was considering making a couple of power improvements like a cold air intake system and a cat back exhaust system. Has anyone made these modifications? If so, do you think it was worth the investment?
Thanks in advance for your help.
A flowmaster exhaust , a scan guage and driving 65 helped me get 1mpg better when I had a 19 ft trailer.It seemed to have more power on grades and sounded a whole lot better,I wouldn't do anything that would mess up warranty,