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Old 01-26-2011, 06:00 PM
79ta 79ta is offline
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Age: 49
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Engine: 2007-???? 409ci (6.7L) Cummins Turbo Diesel 350hp 650lb/ft
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The weak link will be the transmission for any tune over 100hp if its an automatic. I have heard of guys running a 170hp tune without issue and guys running a 100hp tune and had trans trouble. Your driving habits will have the biggest effect on parts failing.
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