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BMW M340i with JB+
A friend of mine installed my old JB+ module on his M340i Xdrive. I am amazed that the same module could be used in 3 different states of tube for the B58. We tried it on a F46 440i, an X3 M40i and in the M40i.
The power gains are noticeable and nowhere near as harsh as it was on the X3 M40i. For $200 you can't beat it.
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Top M Client Advisor in New England. 
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