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NC SD | Wouldn’t be scared of a good tune but don’t know if I would just chip it. Had CC diesel out of ND tune a 9520 for me 3 or 4 years ago and not just the hp but just seems to be smoother running than it ever was. I think he said he added 20%. If I remember right was around $2500. If you have dealership do any work on it afterwards just make sure they don’t do any updates on ecm or you loose the tune. They like to keep the updates current. | |
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Tuning 9520
