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  1. JB4 Tuner

    Power gains of up to 100hp and 100tq to the wheels on a stock vehicle
  2. 2018+ Hyundai Kona General Discussion
    Hey guys. I recently installed a jb4 tune on my Kona limited and have been running map3 with 93 octane. I also have a couple parts nothing major: intake, axleback, bov(yes I already know it does nothing...) My problem is even with all this and running map3 my best 0-60 time has been 7.2 seconds...
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