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Hornlons Hornlons is offline
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Posts: 1
Join Date: Mar 2020
Car: 2015 550i M Sport
Default 03-07-2020, 07:36 AM

I just installed the JB4 on my 2015 M Sport 550i. So far it’s great. Haven’t had much time to tinker with it but the added boost is so much fun to play with even just with the 1st setting. Very happy so far.
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