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Power Strokes
6.7 Aftermarket
6.7 Tuning
Tyrant diesel tuning
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[QUOTE="chaselee, post: 1401624, member: 25627"] Ok thanks. I'm trying to compare apples to apples here. I hear real good things about the Tyrant tunes but don't want to spend the money if they are no better or get terrible mileage. I'm running the P I P Extreme tune currently getting 17-18 mpg back and forth to work which is mostly highway. Highway to me is 75+ mph. [/QUOTE]
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