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Power Strokes
6.4 Aftermarket
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[QUOTE="gambling209, post: 1333782, member: 4093"] I have been running your 275 tune on my 08 3:55 geared truck since jan 2009. now have about 100 miles on this new tune. I like the pedal mapping and the softer shifting. this tune has a lot of engine noise not present on the 275 tune. the noise is a valve train or injector noise. not sure but is loud. also my boost is high like stated above. always thought that increased boost go along with decreased fuel mileage? never really ran any of the 300+ tunes, so maybe the noise just goes with these higher tunes. would like the 275 with the pedal mapping and softer shifts. great product! [/QUOTE]
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