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Power Strokes
6.4 Aftermarket
Radioflyer
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[QUOTE="Radioflyer, post: 1072275, member: 4554"] Update; box 66 drove much better up in the mountains. Got some tcm adjustments to do but here is what my data showed: 7% grade at 5000ft doing 60mph pulled the hill in tow haul 25psi boost, 1100 degree's unloaded in the street file setting from gearhead. going to update the tunes a little and see if that helps before next weekends trip which is a similar drive. [/QUOTE]
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