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Thread: JB4 question

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    JB4 question

    I got my JB4 in today, and while doing test runs I noticed that the 4-way/turn signal arrows on the dash light up whenever the car hits 6200 RPMs. Am I right to assume that this has been programmed in as a shift light? The car is AT, and is shifting at 7000 RPMs. Is this OK? Would a lower RPM shift (via the paddles) keep it in its sweet spot?
    The car pulls real nice now BTW! All smiles here!

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    Shift between 6k-6.5 RPMs, running it to 7k you're taking the car way out of boost & just making a bunch of noise. Since you're an 6AT, I'd recommend looking into the Alpina TCM flash to get your paddles to shift faster (in addition to smoother downshifts & timing recovered in every gear)
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    Good to know. Thanks. The Alpina flash sounds interesting.

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    It's the shift light you set on menu 3 in dash. For factory turbos around 6000rpm generally.
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    OK. 6000 sounds good for now. I have to learn how to do the settings I guess. Thanks!

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    Click here to enlarge Originally Posted by bighorns Click here to enlarge
    OK. 6000 sounds good for now. I have to learn how to do the settings I guess. Thanks!
    n54 tech JB4 sticky has a spreadsheet with all the settings. I change gear around 6200rpm. so I would set the shift light at around 6000 if I were you... I used the JB4 for gauge hijacking, and definitely miss some of those features.
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