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Thread: 2012 Camaro zl1 stock acts like the TB is closing @ wot but its not. HELP

  1. #1

    2012 Camaro zl1 stock acts like the TB is closing @ wot but its not. HELP

    Guys I have this 2012 camaro zl1 thats 99% stock besides an upper pulley upgrade. The zl1 had the supercharger rebuilt since it was making grinding sounds.

    Now that its back together its acting weird. Under WOT car pulls then stops, pulls then stops, and so on and on. It almost feels like the throttle is closing and opening over and over. In the log I can see the throttle pedal is pinned and the TB stays open the entire time.

    Anyone ever experience this with a zl1?

    Thanks,street drive.hpl

  2. #2
    Tuning Addict
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    Torque management for supercharger. You need to increase the max allowed boost and it's hysteresis settings. Should just be the bypass opening and closing that you're feeling.
    2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
    2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80

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  3. #3
    Senior Tuner edcmat-l1's Avatar
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    MAP pressure.jpg

    What Greg said. You can see it in the manifold pressure. Throttle stays open but boost fluctuates drastically. It's opening the bypass valve.

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