I was cruising thru the 6.4 area and they are all switching out their lower air dam to different later ones from Ford... JOB 2+ part 3's. I guess they are picking up about 1mpg hwy. Anything like that for the 05-07?
As far as I know, it is only a 6.4 thing Ford was trying to improve the bad factory MPG outta the newer engines. At least, it is only for the 6.4s from Ford. Havent heard of anything aftermarket for the 05-07s either.
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