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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > JB4 G4 vs G5 ISO



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      05-02-2013, 06:04 PM   #1
MasterWang
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JB4 G4 vs G5 ISO

How much "faster" is G5 ISO compared to the G4 in a straight line?

Some have said G5 will win everytime.
I've also heard G5 is smoother, but not much faster if at all.
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      05-02-2013, 06:40 PM   #2
amr_e90
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when I went from the g4 too g5 I felt a nice difference not in power but in smoothness and response . The g5 is in charge now with the way the car runs and boosts , unlike befor when the g4 would send a signal too the dme too enhance the cars performance . Also befor my tune is on as in cars warmed up enough the car feels more solid and most important my wastegate rattle is all gone !
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      05-02-2013, 08:56 PM   #3
oshusttoley
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G5 can raise boost more. Also g5 iso controls boost and unlike g4 tricking the dme to give more boost i think.
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