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I have h&r sport springs and while it does make the car look great, the ride is really harsh. If i could go back and do it again I would just get coilovers instead. I have jb4 with downpipe on my 340 and it sounds great, power is significantly up from stock. I can't speak to the jb+ however
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2016 340i xDrive 6MT (regretfully sold)
2020 M340i xDrive
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