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Thread: G8 GT - Base Shift Pressure Upshift X, Y, Z

  1. #1
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    G8 GT - Base Shift Pressure Upshift X, Y, Z

    I know this should be answered somewhere but I'm not having luck searching old posts.

    Is it true that Base Shift Pressure X is Sport mode and Y is Normal mode?

    I thought it was the other way around until told otherwise recently.

    2009 G8 GT - White Hot

    226/234 601/601 112+4, Yank SS 3600, SLP Longtubes, Magnaflow exhaust, Rotofab, 3.91 Rear

  2. #2
    Advanced Tuner
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    Everything I have read says X is Normal mode and Y is Sport mode. My adjustments to base shift time in Y mode made Sport mode shifts faster...

  3. #3
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    I have set them all to x
    Josh Performance Tuning (956)784-0059
    https://www.facebook.com/joshperformancetuning

  4. #4
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    Now I'm confused again.

    2009 G8 GT - White Hot

    226/234 601/601 112+4, Yank SS 3600, SLP Longtubes, Magnaflow exhaust, Rotofab, 3.91 Rear

  5. #5
    Tuner blkscooby's Avatar
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    09 G8 GT- 224/234 114 cam, 3200 stall, 3.45 gears, Vararam, 1 7/8" headers, 3" exhaust, HSW nitrous