Recent content by Rats65
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2007 5.9 Cummins
Hello from Australia, I have recently perched a 2007 3500 mega cab with a 5.9 Cummins. It has a mm3 tunner and a few other mods, I’m finding the auto is shifting a bit off and not what I would expect. Is this something to do with the mm3 tunner or something else ??- Rats65
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- Forum: Engine & Performance
