n55 JB4 G5 ISO?

E92TiAg335i · 02-19-2016, 08:22 PM

Hey guys. I just ordered a JB4 G5, but I am tempted to do the diode modification and make it into an ISO. I've been reading threads that there are some problems associated with it. I tried to do a search to see if the are any fixes for the previous problem, but can't find a thing about it as the threads are from 2011/2012.

Any opinions?

Thanks.

weehe126 · 02-19-2016, 09:31 PM

All the problems have been fixed with new firmware. So nothing to worry about.

jwalker87 · 02-19-2016, 09:32 PM

Yes, cut the diode and go ISO. Latest firmware version is 5_9 if I remember correctly.

E92TiAg335i · 02-19-2016, 10:18 PM

Alright, sounds good. Have either of you done it on your own cars? Is it a big difference?

Manberg · 02-20-2016, 12:14 AM

I need to do this still.

weehe126 · 02-20-2016, 09:32 AM

Yes, did it about a year and a half ago.

Sidewinderpb · 02-20-2016, 11:11 AM

Yeah I've had it since it came out. Really easy to do.

Mike@N54Tuning.com · 02-23-2016, 01:18 PM

Quote:

Originally Posted by weehe126

All the problems have been fixed with new firmware. So nothing to worry about.

+1

Mike

EB89 · 03-01-2016, 08:59 AM

I had mine changed to ISO 5.9 recently, I've found 1st gear is now jolty, can't be sure if it's related or not, but it appeared after the change.

Maybe other people can chime in with their experiences.

02-19-2016, 08:22 PM	#1
E92TiAg335i Captain 216 Rep 849 Posts Drives: 2016 F82 M4 Azurite/Opal DCT Join Date: Sep 2015 Location: Boca Raton, Florida iTrader: (0)	n55 JB4 G5 ISO? Hey guys. I just ordered a JB4 G5, but I am tempted to do the diode modification and make it into an ISO. I've been reading threads that there are some problems associated with it. I tried to do a search to see if the are any fixes for the previous problem, but can't find a thing about it as the threads are from 2011/2012. Any opinions? Thanks.
	Appreciate 0 Tweet Quote

02-19-2016, 09:31 PM	#2
weehe126 Brigadier General 1161 Rep 3,189 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	All the problems have been fixed with new firmware. So nothing to worry about.
	Appreciate 0 Quote

02-19-2016, 09:32 PM	#3
jwalker87 Major 319 Rep 1,023 Posts Drives: '08 335i, '11 335xi, '01 Z3M Join Date: Jul 2010 Location: Pittsburgh, PA iTrader: (2)	Yes, cut the diode and go ISO. Latest firmware version is 5_9 if I remember correctly. __________________ 2001 e36/7 M Roadster 5spd 2008 e90 335i 6spd 2011 e90 335xi 6spd 2011 e70 x5 diesel 2010 Ducati Monster 696
	Appreciate 0 Quote

02-19-2016, 10:18 PM	#4
E92TiAg335i Captain 216 Rep 849 Posts Drives: 2016 F82 M4 Azurite/Opal DCT Join Date: Sep 2015 Location: Boca Raton, Florida iTrader: (0)	Alright, sounds good. Have either of you done it on your own cars? Is it a big difference?
	Appreciate 0 Quote

02-20-2016, 12:14 AM	#5
Manberg Second Lieutenant 88 Rep 239 Posts Drives: 2011 e90 335i Join Date: Aug 2013 Location: SoCal iTrader: (0)	I need to do this still. __________________ M-Sport, 6MT, PPK, JB4 ISO + Rev.3, VRSF 7'' FMIC, VRSF Catless DP, BMS Charge Pipe, MFactory LSD, Öhlins R&T, M3 Control Arms, Rogue 6MT Bushings, Remus Exhaust, Duke Dynamics CF Diffuser, Cyba Scoops, VMR VB3 19s, BMS Clucth Stop
	Appreciate 0 Quote

02-20-2016, 09:32 AM	#6
weehe126 Brigadier General 1161 Rep 3,189 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	Yes, did it about a year and a half ago.
	Appreciate 0 Quote

02-20-2016, 11:11 AM	#7
Sidewinderpb Banned 329 Rep 1,739 Posts Drives: 2017 340i xDrive 6mt Join Date: Nov 2013 Location: CT iTrader: (7)	Yeah I've had it since it came out. Really easy to do.
	Appreciate 0 Quote

03-01-2016, 08:59 AM	#9
EB89 Brigadier General 541 Rep 3,131 Posts Drives: 2011 335i e92 DCT Join Date: Sep 2015 Location: Australia, NSW iTrader: (0) Garage List 2011 BMW 335i e92 [0.00]	I had mine changed to ISO 5.9 recently, I've found 1st gear is now jolty, can't be sure if it's related or not, but it appeared after the change. Maybe other people can chime in with their experiences.
	Appreciate 0 Quote