gear change and speedo ????????? help
05-19-2010, 11:57 PM
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gear change and speedo ????????? help hello i just upgrade my 97 z28 a4 from 2.73 ratio to 3.08 gears and my ? is my hypertech tuner only has 2.73 or 3.23 setting i chose the 3.23 and it ask me a tire size what tire size should i tell it to get the most accurate reading?
