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Old 09-23-2010, 03:29 PM   #2
DSteck
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Drives: 2006 Corvette Z06
Join Date: Feb 2010
Location: St. Louis, MO
Posts: 587
What do you mean "data"? It really depends on where you go/who does the tune. I usually sit down with the customer and explain what's changing and why, and when using a dyno, can get them a baseline to show gains.
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