Bully dog for cummins isx

Discussion in 'Trucking Electronics, Gadgets and Software Forum' started by Wespipes, Jan 29, 2020.

  1. Wespipes

    Wespipes Medium Load Member

    Jul 14, 2019
    I couldn't find reviews online that werent sponsored by them. Anyone have any personal experience with this tuner or other tuners like it? I'm just trying to increase mpg and keep truck as healthy as possible
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