Have a read here .. http://pcmhacking.net/forums/viewtopic.php?f=7&t=1396
Then maybe start a thread with your questions. There is no performance tick box so it will take some learning and understanding to actually make improvements on a stock tune - its much much easier to stuff up what the team of engineers setup in the calibration.
VT with the V6 ecotec
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VL400
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