jb4 Help

cali__n54 · 11-19-2019, 01:29 PM

I have a 2009 e90 335xi and recently installed Jb4 this past weekend. The car runs and drives fine but the mobile app and logs are showing 8.1 psi boost pressure at idle and off throttle on maps 1,4 and 5. WOT on map 5 will jump up to about 22-24 psi but will not switch to map 4. Could anyone provide any insight to why this may be? Car is basically stock with bms intake. Has almost 55k miles and recently had a walnut blast.

Also car will show codes 3100, 29f3, 2abd, 2abc, 2d2e, 2b2c on cold start, once the car warms up i am able to clear all codes except for 29f3.

Any insight will be much appreciated.

cali__n54 · 11-21-2019, 02:31 PM

Bump

RoughKnight · 11-21-2019, 03:18 PM

If you want my two sense, If you keep having issues with it (seems to be a bad install/unit) you should take it out and run MHD. Cheaper/easier and turn key solution.

trb1 · 12-04-2019, 11:22 AM

Low pressure fuel sensor. Do you have a stock TMAP sensor? Make sure the upgraded sensor box isn't checked in the settings in the jb4 app.

clegg · 12-04-2019, 02:19 PM

+1 on MHD. It's amazing and I am only at stage 1.

11-19-2019, 01:29 PM	#1
cali__n54 Private 8 Rep 60 Posts Drives: BMW 335i Join Date: Jun 2019 Location: San Diego iTrader: (0)	jb4 Help I have a 2009 e90 335xi and recently installed Jb4 this past weekend. The car runs and drives fine but the mobile app and logs are showing 8.1 psi boost pressure at idle and off throttle on maps 1,4 and 5. WOT on map 5 will jump up to about 22-24 psi but will not switch to map 4. Could anyone provide any insight to why this may be? Car is basically stock with bms intake. Has almost 55k miles and recently had a walnut blast. Also car will show codes 3100, 29f3, 2abd, 2abc, 2d2e, 2b2c on cold start, once the car warms up i am able to clear all codes except for 29f3. Any insight will be much appreciated.
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11-21-2019, 02:31 PM	#2
cali__n54 Private 8 Rep 60 Posts Drives: BMW 335i Join Date: Jun 2019 Location: San Diego iTrader: (0)	Bump
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11-21-2019, 03:18 PM	#3
RoughKnight Private First Class 54 Rep 174 Posts Drives: BMW 335xi N54 Auto Join Date: Apr 2019 Location: Ottawa Ontario iTrader: (0)	If you want my two sense, If you keep having issues with it (seems to be a bad install/unit) you should take it out and run MHD. Cheaper/easier and turn key solution.
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12-04-2019, 11:22 AM	#4
trb1 Private First Class 67 Rep 128 Posts Drives: 09 335i Join Date: Feb 2019 Location: Grand Rapids, MI iTrader: (0)	Low pressure fuel sensor. Do you have a stock TMAP sensor? Make sure the upgraded sensor box isn't checked in the settings in the jb4 app.
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12-04-2019, 02:19 PM	#5
clegg First Lieutenant 87 Rep 301 Posts Drives: 335i E92, 435i F32,X5 F15 Join Date: Apr 2019 Location: O'Fallon, MO iTrader: (0)	+1 on MHD. It's amazing and I am only at stage 1.
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