Thread: Stop me but...
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      11-08-2016, 03:42 PM   #15
The Wind Breezes
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Drives: 135i N55 DCT
Join Date: Apr 2015
Location: USA

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And there you go. Don't run a JB4 when both N54 and now N55 have good, inexpensive flash tunes available. Any of these flash tunes will have dozens of modified maps for controlling engine parameters. JB4 modifies a couple sensors, spams the CAN bus and calls it a day. No VANOS, no precision fueling, and poor consistency and drivability.
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