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Old 05-17-2010, 11:01 PM   #2
alqamzi
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Join Date: Sep 2009
Location: denver,CO
Posts: 907
Drives: 2009 c63, 2011 GT500
56whp gain is nice and thats what we typically get from a tune...but these are the lowest numbers i've seen from a c63, we get from 355-377whp stock u got 388whp with tune!!! thats very low...
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