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      01-06-2017, 04:07 PM   #9
DrKevM5
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Drives: G05 X5, F87 M2
Join Date: Aug 2008
Location: Western NY

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I've had the Stage 1 tune since September, in anticipation of later upgrading to Stage 2 once the turbo package came out. I originally had the JB+, but was having issues with the car going into limp mode after approx. 20min. of hard track usage. I theorized that the JB+ lacked the more comprehensive control of parameters needed for extended aggressive use. Haven't had any problems with the Stage 1 on the track, and in comparison to the JB+, the power delivery was much smoother. Planning on upgrading to the turbo/Stage 2 in the spring.
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