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7.3 fuel milage

1K views 8 replies 5 participants last post by  cruzndiesel 
#1 ·
I have a 2001 7.3 f250. I'm running 315/75/16 tires, 4in mbrp cool duals, stage 2 afe intake and superchips programmer set on 60hp. still only getting 12mpg which is what i was getting before exhaust and intake. Any help on mpg increase would be greatly appreciated. Also doesn't ever blow black smoke when stomped and will fuel knock from time to time.
 
#6 ·
I get 15 with min and that's with a sct 100ho tune


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