- Apr 15, 2012
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I know this has probably been talked about before but I haven't read it. From all the talk i hear the dealers have a new computer that they plug into your ecu to check for tunes correct? And from what i heard they can tell when you tune and detune your car. So when you go into the dealer for check ups or possible problems is it better to just leave the tune in there rather than looking like a sneaky person and detuning?