Forum Discussion
ktmrfs
Jun 17, 2013Explorer III
2500 Grunt wrote:pronstar wrote:
Many diesel tuners with multiple programs, have "tow" settings are close to stock.
And their higher HP settings are usually not recommended for towing.
There is also one out there that claims that it can not be traced or detected by a dealer if it is returned back to stock before returning it to the dealer for service.
If it modifies or replaces the factory ECM even if it returns the factory tune when removed it CAN be easily detected on later model GM's and they can/will do a search to verify that only factory ECM tunes were installed before authorizing a warranty repair.
But as you mention, many of the tuners either don't recomend or flatly state do NOT use the tunes when towing, or only recomend the lowest tune for towing.
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