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      10-04-2012, 11:26 PM   #4
marv85
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Drives: '07 335i MT
Join Date: Jun 2010
Location: Portland

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The G5 is the new JB4 basically. It has an upgraded board which supports new features:
Like isolated boost control, build in CPS (timing control), speed limit defeat, NLS/2Step, better fueling control.
Check the link below for more info

http://www.n54tech.com/forums/showthread.php?t=15904
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