JB4 Blues

Bavarian Tech · 05-13-2015, 07:32 PM

Need some input from anyone that has delt with JB4 issue's. I keep getting a reduced power output check control. Performed a short test, ran though the test plans. Was advised HPFP had failed. Replaced and test drove. Faults returned. Ran the test plan again..Was told to replaced the rail pressure sensor. Same situation. Running the lastest I-level software

"29E2"-Fuel injector rail, pressure-sensor signal
"26F2"-Fuel high-pressure system, fuel pressure

Only happens on Jb4 maps (Map 1)..Stock is fine.
Replaced HPFP, with latest version
Seems I can trigger it doing a 4th gear pull, It will climb and then fall on its face. Injectors are original , index 01. Test plan for the injectors, says their OK. Theirs an SIB related to the faults, with a flow tree but its for stock cars obviously. Any input ??

335NJ · 05-13-2015, 07:51 PM

Get a log of this happening if you can. I wouldn't point the finger at the JB4..

Did this start happening out of nowhere?

MM Performance · 05-13-2015, 07:59 PM

Post a log link uploaded to datazap to help out

robc1976 · 05-13-2015, 08:01 PM

Quote:

Originally Posted by Bavarian Tech

Need some input from anyone that has delt with JB4 issue's. I keep getting a reduced power output check control. Performed a short test, ran though the test plans. Was advised HPFP had failed. Replaced and test drove. Faults returned. Ran the test plan again..Was told to replaced the rail pressure sensor. Same situation. Running the lastest I-level software

"29E2"-Fuel injector rail, pressure-sensor signal
"26F2"-Fuel high-pressure system, fuel pressure

Only happens on Jb4 maps (Map 1)..Stock is fine.
Replaced HPFP, with latest version
Seems I can trigger it doing a 4th gear pull, It will climb and then fall on its face. Injectors are original , index 01. Test plan for the injectors, says their OK. Theirs an SIB related to the faults, with a flow tree but its for stock cars obviously. Any input ??

injector codes are a un plugged injector

mike@x-ph.com · 05-14-2015, 12:27 AM

Quote:

Originally Posted by 335NJ

Get a log of this happening if you can. I wouldn't point the finger at the JB4..

Did this start happening out of nowhere?

+1

Bavarian Tech · 05-14-2015, 03:13 PM

How the hell would I log ? ISTA doenst have logging capabilities

LaCross · 05-14-2015, 08:07 PM

Quote:

Originally Posted by Bavarian Tech

How the hell would I log ? ISTA doenst have logging capabilities

You would remove your head from your hole and plug your jb4 into your laptop

335NJ · 05-14-2015, 08:26 PM

So you're implying the JB4 is an issue in your OP (Based on "people who have dealt with JB4's issues"), but don't know how to even use it?

http://www.n54tech.com/forums/showthread.php?t=10605

As suggested above though, I wouldn't count on even a good datalog showing the issue. If it's a problematic/failed part in the fueling system, the JB4 can only log the main bits.

Here's what a quick google revealed:http://www.1addicts.com/forums/showthread.php?t=1002296

Where is your FOL set at?

Bavarian Tech · 05-15-2015, 07:02 AM

Quote:

Originally Posted by 335NJ

So you're implying the JB4 is an issue in your OP (Based on "people who have dealt with JB4's issues"), but don't know how to even use it?

http://www.n54tech.com/forums/showthread.php?t=10605

As suggested above though, I wouldn't count on even a good datalog showing the issue. If it's a problematic/failed part in the fueling system, the JB4 can only log the main bits.

Here's what a quick google revealed:http://www.1addicts.com/forums/showthread.php?t=1002296

Where is your FOL set at?

Thank you, I've only had the JB4 for a little less than a week. I was running BMW PPK but got bored with that...I'll do the log this weekend, I'm going to check the fuel pressure this evening I guess and compare values with ISTA

335NJ · 05-15-2015, 07:33 AM

Quote:

Originally Posted by Bavarian Tech

Thank you, I've only had the JB4 for a little less than a week. I was running BMW PPK but got bored with that...I'll do the log this weekend, I'm going to check the fuel pressure this evening I guess and compare values with ISTA

First thing to do is connect your laptop to the JB4, and under the User Adjustments tab, see what Fuel open loop is set at.

Mike@N54Tuning.com · 05-15-2015, 08:18 AM

Quote:

Originally Posted by 335NJ

First thing to do is connect your laptop to the JB4, and under the User Adjustments tab, see what Fuel open loop is set at.

+1

Then Log and send it into technical support at BMS.

Mike

iturbo_bmw · 05-15-2015, 12:06 PM

sounds like hpfp issue to me. I got those codes when my hpfp was dying/dead. now they're gone

05-13-2015, 07:32 PM	#1
Bavarian Tech Major 269 Rep 1,203 Posts Drives: 335i Join Date: Jan 2007 Location: Pittsburgh/Harrisburg iTrader: (15) Garage List 2006 330i [10.00]	JB4 Blues Need some input from anyone that has delt with JB4 issue's. I keep getting a reduced power output check control. Performed a short test, ran though the test plans. Was advised HPFP had failed. Replaced and test drove. Faults returned. Ran the test plan again..Was told to replaced the rail pressure sensor. Same situation. Running the lastest I-level software "29E2"-Fuel injector rail, pressure-sensor signal "26F2"-Fuel high-pressure system, fuel pressure Only happens on Jb4 maps (Map 1)..Stock is fine. Replaced HPFP, with latest version Seems I can trigger it doing a 4th gear pull, It will climb and then fall on its face. Injectors are original , index 01. Test plan for the injectors, says their OK. Theirs an SIB related to the faults, with a flow tree but its for stock cars obviously. Any input ??
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05-13-2015, 07:51 PM	#2
335NJ Colonel 533 Rep 2,872 Posts Drives: 2008 335i 6MT E90 Join Date: Feb 2014 Location: NJ/Philadelphia Suburbs iTrader: (1)	Get a log of this happening if you can. I wouldn't point the finger at the JB4.. Did this start happening out of nowhere? __________________ *BSM E90 6MT*-JB4 G5 ISO-BMS DCI-Golf-Tee Mod-Hankook S1N2 Non-RFT-ER Chargepipe/TiAL BOV-E40 blend-VRSF V2's-M3 CDV-MHD/JB4 FLASH-VRSF 5" STEPPED FMIC
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05-13-2015, 07:59 PM	#3
MM Performance Major 318 Rep 516 Posts Drives: BMW 335i Cp TiAg 6AT Join Date: Jan 2008 Location: Houston, Tx iTrader: (4)	Post a log link uploaded to datazap to help out
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05-14-2015, 03:13 PM	#6
Bavarian Tech Major 269 Rep 1,203 Posts Drives: 335i Join Date: Jan 2007 Location: Pittsburgh/Harrisburg iTrader: (15) Garage List 2006 330i [10.00]	How the hell would I log ? ISTA doenst have logging capabilities
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05-14-2015, 08:26 PM	#8
335NJ Colonel 533 Rep 2,872 Posts Drives: 2008 335i 6MT E90 Join Date: Feb 2014 Location: NJ/Philadelphia Suburbs iTrader: (1)	So you're implying the JB4 is an issue in your OP (Based on "people who have dealt with JB4's issues"), but don't know how to even use it? http://www.n54tech.com/forums/showthread.php?t=10605 As suggested above though, I wouldn't count on even a good datalog showing the issue. If it's a problematic/failed part in the fueling system, the JB4 can only log the main bits. Here's what a quick google revealed:http://www.1addicts.com/forums/showthread.php?t=1002296 Where is your FOL set at? __________________ *BSM E90 6MT-JB4 G5 ISO-BMS DCI-Golf-Tee Mod-Hankook S1N2 Non-RFT-ER Chargepipe/TiAL BOV-E40 blend-VRSF V2's-M3 CDV-MHD/JB4 FLASH-VRSF 5" STEPPED FMIC Last edited by 335NJ; 05-14-2015 at 08:31 PM..*
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05-15-2015, 12:06 PM	#12
iturbo_bmw Major 85 Rep 1,099 Posts Drives: 335i, 530i Join Date: Oct 2012 Location: San Jose iTrader: (0)	sounds like hpfp issue to me. I got those codes when my hpfp was dying/dead. now they're gone
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