Thread: How do I know if JB4 is working properly?
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      06-29-2014, 01:46 PM   #5
teapain
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Drives: 2016 340i XDrive
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Quote:
Originally Posted by 1lyfe View Post
if you ahve your laptop plugged in then floor it and see what your max boost pressure is
if the graph shows higher boost than stock numbers then its working
Would this work in Park or do I have to be in Drive?
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