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If you’ve just installed a bigger set of tires on your Jeep JL Wrangler and are in need of re-calibrating your speedometer, you can go to your dealership and pay $150 to have it done or you can get a TAZER JL and do it yourself! Made by Z Automotive, the TAZER JL is a super compact programmer that that plugs into your OBDII and works off the screen in the middle of your instrument cluster and the buttons on your steering wheel. Of course, not only will you be able to set your own tire size, there’s a ton of other things you can do with it including, changing your gear ratio after installing new gears, turning off your TPMS or changing its threshold and really, so much more. The TAZER JL also has LIVE functions, the ability to still use it while plugged in and options for it include things like, being able to turn off your Auto Start/Stop System and Traction Control. And, as silly as it may sound, it even has fun options like a light show with 6 different modes. The best part about the TAZER JL is that Z Automotive constantly makes firmware updates for it and they can be downloaded using their Program Utility software. With all that said, the following short video will show you just how easy it is to install and use on your Jeep JL Wrangler. We hope you enjoy.