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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 rattle fix?



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      12-14-2012, 03:59 AM   #1
addict135i
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Jb4 rattle fix?

Hey guys, my car has the wastegate rattles and I've read places about the jb4 having it. It's a g4 board 18ohm. Can someone help me out to fix it as it's very annoying!!! Thanks In advance!
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      12-14-2012, 08:06 AM   #2
robc1976
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Originally Posted by addict135i View Post
Hey guys, my car has the wastegate rattles and I've read places about the jb4 having it. It's a g4 board 18ohm. Can someone help me out to fix it as it's very annoying!!! Thanks In advance!
If it s the older G4 board set the FUD = 99 (last setting under user adjustment)
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      12-14-2012, 09:12 PM   #3
addict135i
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Originally Posted by robc1976
Quote:
Originally Posted by addict135i View Post
Hey guys, my car has the wastegate rattles and I've read places about the jb4 having it. It's a g4 board 18ohm. Can someone help me out to fix it as it's very annoying!!! Thanks In advance!
If it s the older G4 board set the FUD = 99 (last setting under user adjustment)
How do I do that setting?
With a USB cable?
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      12-14-2012, 10:07 PM   #4
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How do I do that setting?
With a USB cable?
Yes sir
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      12-15-2012, 08:38 AM   #5
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IIRC on the non-ISO boards, FUD=99 just holds pwm @ 80. This may or may not increase rattling. It did for me, but you can try it. The ISO board has a more comprehensive rattle fix system allowing you to dial in a wider range of options.
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