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      11-24-2019, 08:32 PM   #5
luca10
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Drives: 2018 BMW 340i xdrive
Join Date: Dec 2018
Location: New Jersey

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The performance was good, definitely a big difference in power. And with this device, the gt black, it has 7 different settings. Up to setting 5/6 is smooth, 7 (the most powerful setting) gets a little choppy but not too bad