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That gray area with BMW & tunes is the only reason i prefer to stick with Dinan...there have been far enough experiences with vehicle issues , in which BMW themselves can't seem to drill down to the root cause...such as the faults some are currently experiencing on their new XM's. My thoughts are that it's easy enough to attribute certain failures on a new XM, with non-BMW-approved tune, to the tune itself. Not sure what warranty or policy is offered with your flash, should such an unfortunate case present itself.
The Euro shops (2) that have managed my Dinan tunes, offer to reinstall or re-flash back to Dinan spec should a dealer mistakenly erase...for free, anytime.
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