Better mpg for F150 King Ranch
Bought a 2008 F150 Crew Cab King Ranch for TT. I get around 12 mpg and 19 hwy. Thinking adding a 3.5" exhaust system and add a chip to truck. Did this to a 3/4 ton pulling a 5th wheel and got better...
Forum Discussion
If your truck is running correctly, the air fuel mixture is 14-1. The engine is no more than an air pump pulling in a mixture of 14-1. I have not seen any significant improvement from a chip or tune other than at wide open throttle. The exhaust will depend on what is on the truck now. I changed from a stock muffler with 3 1/2 inch pipe to a Magnaflow. All I got was more noise.
