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Old 12-18-2012, 04:32 PM   #57

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Drives: 2010 2SS/RS R6P
Join Date: Nov 2008
Location: Plant City, FL
Posts: 4,343
Originally Posted by L99BEN View Post
Couldn't one just use this to calibrate their speedo while leaving their factory tune intact?:

Either way, it is an adjustment of the factory settings on the ECM, which in turn = loss of powertrain warranty in most cases (ask you local dealership to be sure).
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