Quote:
Originally Posted by tiger123
... He advised to reflash the ECM with the latest file he sent me which was back in July 2014. ...
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If you have some way to backup and restore the factory ROM image, I'd say give it a try. If the tuned ROM image doesn't work, go back to the factory image. If you can't restore back to the saved factory image, I'd leave it alone.
I don't have any experience with tuning but, going by what I've read on this site, UpRev is the way to go. YMMV