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      11-08-2012, 12:01 AM   #4
Sigma Alpha Epsilon
Drives: 2007 335xi
Join Date: Apr 2012
Location: Encinitas

Posts: 425
iTrader: (1)

G4 is the old board. BMS just came out with the G5 board with isolated boost control (along with a couple extras). In a nutshell it makes the turbos spool in a more controlled manor (determined by the user). Its a big deal with the JB4 community
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