2016 Roush F-150 Non-supercharged 5.0L
#31
#33
Senior Member
#34
Senior Member
15.5 seems to be as good as I can get in a mix of city/ hwy driving, like the others said the resonator makes a huge difference on drone, I have flow master cat back on mine with the resonator, also the Roush has the cold air intake, that adds a lot of growl to the truck.