JB4 installed and now fault codes

z4s4 · 06-08-2014, 06:42 PM

Anybody install the JB4 in a Z4 35is and not have fault code issues? I just installed the JB4 (Map2) and keep getting error codes for O2 sensors and fuel pump. Installed new 02 sensors but keeps giving same codes. Tried to shut off JB4 while installed (map 0) but same codes still come up. Once I removed chip, all good back to normal.

persian54 · 06-16-2014, 12:40 AM

I recommend sending a log to Terry@BMS

VailM3 · 06-16-2014, 05:53 AM

you really should have got a cobb. JB4 is a seriously subpar product due to installion

hyper1 · 06-16-2014, 07:57 PM

good luck

06-08-2014, 06:42 PM	#1
z4s4 Registered 0 Rep 2 Posts Drives: 2011 Z4 35is Join Date: May 2014 Location: Nevada iTrader: (0)	JB4 installed and now fault codes Anybody install the JB4 in a Z4 35is and not have fault code issues? I just installed the JB4 (Map2) and keep getting error codes for O2 sensors and fuel pump. Installed new 02 sensors but keeps giving same codes. Tried to shut off JB4 while installed (map 0) but same codes still come up. Once I removed chip, all good back to normal.
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06-16-2014, 12:40 AM	#2
persian54 Lieutenant General 923 Rep 15,818 Posts Drives: M760/G83M4 Join Date: Jun 2009 Location: The Valley, SoCal iTrader: (298)	I recommend sending a log to Terry@BMS __________________ From E93 335i to E89 Z4 to E93 M3/E89 Z4 to E350/SL550
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06-16-2014, 05:53 AM	#3
VailM3 Captain 61 Rep 766 Posts Drives: 2011 Z4 35is Join Date: Jan 2013 Location: Geneva Switzerland iTrader: (0)	you really should have got a cobb. JB4 is a seriously subpar product due to installion
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06-16-2014, 07:57 PM	#4
hyper1 Lieutenant 31 Rep 575 Posts Drives: 2013, Z4/28 Join Date: Jun 2011 Location: BC,Canada iTrader: (1)	JB what good luck
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