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Power Strokes
6.4 Aftermarket
Xrace vs. Xstreet mpg
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[QUOTE="fordman2121, post: 562679, member: 5076"] I know its winter blend but I also know my 7.3X when stock got 18-19 doing the same trip now with the lift and 35s gets 16. Plus I hear of crew cab 4x4 getting 18-20(i assume on summer fuel) so they are now only getting 16? Plus I had a blend of bio(always do) and it always does better on mpg then winter fuel. Has anybody compared the new extreme x tune vs. the xrace or xstreet? Maybe I should try some 3.31 gears(been wanting to anyway) and see what that does for mpg and speed. [/QUOTE]
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