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Hartge N55 F30 335i Engine Software Tune Yields +56HP / +59TQ for F30, F10, F25
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09-03-2012, 01:59 AM
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oneinfantryguy
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Drives: black bmw 535xi m sport
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Has anyone considered the kellener upgrade. There are some impressive numbers. Looks Similar to hartage but better numbers. Also a video ( in French I believe) on you tube.
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