JB4 B48/B58 Firmware, Settings, and Notes
 

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https://cdn.shopify.com/s/files/1/08...g?v=1550782490

This thread will be the single source of information for everything BMW B48/B58 JB4 related! Note both engines use the same hardware. The JB4 will detect the different during installation and map accordingly.

B48/B58 JB4 Install Guide: Latest Install Guide

JB4 Mobile Smart Phone wireless connection directions Click here.
BMS data cable hard wired software and directions Click here.


Map Guide as of v15+ firmware:

Map0: Stock tuning, fully disable JB4
Map1: Additive map with peak of 3psi over stock added (91 octane)
Map2: Additive map with peak of 4psi over stock added (91-93 octane)
Map3: Additive map with peak of 6psi over stock added (93+ octane)
Map4: Absolute target map with peak of 20psi target (93+ and/or E30 octane) suggested for higher boost models like G chassis, Supra, and Z4. EWG required for proper control.
Map5: Absolute target map with peak of 22psi target (E30+ fuel) suggested for higher boost models like G chassis, Supra, and Z4. EWG required for proper control.
Map6: Custom tuning map allowing both additive (below 10psi) and absolute (above 10psi) targeting. Setting RPM1500 boost below 5.7psi will make entire map6 additive, setting above 6psi will make entire map6 absolute target.
Map7: WMI map (boost varies based on WMI additive, meth flow, and other criteria)
Map8: VALET / Low Boost Map


Firmware:

v16

1) Added test fix for older vehicles previously not able to run firmware newer than v11.
2) Adjusted WGDC so it will always display as 0 if not equipped with a EWG connector.

v15

1) Revised map guide, map4 is now absolute 20psi map and map5 absolute 22psi map, especially useful for Supra/M340i applications on E85 mixtures.
2) Revised boost control system for vehicles equipped with the EWG connector. Set duty bias to 50 across the board as the new default settings.
3) Added CANflap support for newer models.
4) Adjusted FF to save unique values per map to facilitate boost targeting during on the fly map changes.
5) Added speed logging parameter.

BMW_B48_B58_OBDII_14

1) Changes to support back end flash maps (see B58 BEF thread for details)
2) Adjustment to in dash controls to correct bug with newer vehicles having bouncing gauges while in dash mode
3) Added high fuel pressure as a CANbus logging channel
T11) Added meth_trigger = 4 mode, to allow meth to flow on map0 with OBDII removed.

JB4 v13_1 firmware:

1) Made fuel pressure safety more sensitive

JB4 v13 firmware:

1) Added active safety system for high fuel pressure. JB4 will revert to safety is fuel pressure drops below 7 (1000psi) during full throttle.
2) Moved safety/VALET map to map8
3) Adjusted map4 to be a performance map between map3 and map5. With the BEF map4 targets around 20psi
4) Adjusted FF learning to be slightly more aggressive.

BMW_B48_B58_OBDII_11

1) Potential fix to diagnostic code clearing bug that has cropped up with the latest software builds.
2) Adjustment to absolute target mapping, lots more testing needed. Send in some logs if running absolute target maps like map7.
3) Changed map4 to low boost VALET map.

Default Settings:

Attachment 96544
Attachment 96545





'***************************************
'OBDII In Dash Menu
'***************************************

'0 map menu, map shown on tach (tach shows Map)
'1
'2 Boost gauge on fuel, scaling in dash is 0 to boost safety setting, turns on when gas pedal is pressed 60% or more and turns itself off when you resume low throttle use. (tach = 0 OFF; tach = 1 Boost Only; tach = 2000 Boost on fuel, Meth on speedo ring; tach = 3000 Boost on fuel, Timing on speedo ring; tach = 4000 Boost on fuel, AFR on speedo ring)
'3
'4 Delete Fault Codes
'5 Dash Mode. tach = 1000, SAE; tach = 2000 Metric
'6 1st gear boost limiter. (Tach = boost cap / 3)
'7 2nd gear boost limiter. (Tach = boost cap / 3)
'8 3rd gear boost limiter. (Tach = boost cap / 3)

How to update firmware:

For firmware updates if having issues we suggest you turn off WiFi, change upload timeout to 25, and set your phone next to JB4 box under the hood.

Download firmware using the new JB4 Mobile firmware database or externally by clicking this link.



Copyright Notice:
JB4 Software is Copyright © 2006-2016 by Burger Motorsports Incorporated. All rights are reserved. De-compilation, disassembly, reverse-engineering, alteration, and redistribution in any form without the prior written consent of Burger Motorsports Inc. is prohibited.

FAQ

When I delete codes why are they not deleting?

Ensure the JB4 has the latest firmware and ensure the vehicle is in diagnostic mode. You enter diagnostic mode by pressing the ignition button 3 times with your foot off the brake so all lights appear in dash. On modern BMWs codes can not be cleared with the engine running or when the car is not in diagnostic mode.

Can I run E85 with this platform?

E85 can be mixed in but with trade offs. The BMW B48/B58 platform has an internal fuel cap that causes the DME to reduce it's internal boost target as fuel volume increases above expected levels. Since E85 requires a higher fuel volume the net result is a lower boost target. While small mixtures of 10-20% can be used to increase lower octane fuels expect a little less boost when running it. If equipped with the factory PPK tuning the internal fuel limit is higher and you can effectively get away with a little heavier ethanol mixture.

What is the optional EWG harness for?

Order here: https://burgertuning.com/products/n5...nt=18543513219

This plugs in to the JB4 connector using the same directions as the N55 EWG plug (purple in #9, blue in #16) and allows the JB4 to increase or decrease the wastegate dutycycle directly. Cars running a WMI kit may benefit with the JB4 being able to more effectively add boost. While those with certain exhaust modifications may benefit from having the JB4 reduce wastegate dutycycle to prevent boost creep and throttle closure. In most cases there is no benefit to adding in this optional connector. After attaching pins to JB4 harness plug the EWG connector itself to the factory plug on the wastegate by removing the airbox and unsnaping the heat blanket covering the EWG assembly.

Attachment 98053
Attachment 98054
Attachment 90388

What is the optional fuel pressure harness for?

Note with the addition of the back end flash maps the optional fuel pressure connection is no longer useful.

This plugs in to the JB4 connector (green wire goes in #21, black wire goes in #4, fuel pressure plug attaches to fuel pressure sensor under engine cover) and allows the JB4 to both datalog high fuel pressure and also offset the fuel pressure signal back to the DME adjusting fuel trims. This sensor DOES NOT increase the DME's internal fuel limit or its tendency to reduce it's boost target as fuel volume increases. It is suggested for correcting fuel trim issues in unique situations like for a larger turbo, heavy E85 mixture experimentation, etc. In most cases there is no benefit to this optional connector so only add it if advised by BMS after we review your logs.

Is WMI (water methanol injection) compatible with the B48/B58?

Yes! In addition to increasing octane WMI also supplements the fuel system allowing more boost and a richer air/fuel ratio under the DME fuel cap. Installation is the same as the F series N55. FSB blue goes to #14, FSB orange goes to #3.

Random Development Timeline:

6/18/15: Just placed an order for a Mediterranean Blue metallic BMW 340i automatic. It will have the new B58 engine which I suspect will be very similar to the N55. But we'll find out in 2-3 months! Car is being made in the South Africa factory. Hope they do a good job of it. :drinking:
11/27/15: Finally showed up! Only took six months lol. Will get going on some baseline numbers and tuning next week!
11/28/15: Got a JB4 B58 Prototype up and running including full CANbus control!
12/1/15: Initial Dyno Testing: http://www.n54tech.com/forums/showthread.php?t=35355
12/15/15: Early B58 JB4 E85 Dyno Testing. Platform is not really E85 friendly at least for now: http://www.n54tech.com/forums/showthread.php?p=430180
1/8/16: Early adopter systems are available on our website: http://www.burgertuning.com/B58_JB4_...nce_tuner.html
3/3/16: BMS B58 Methanol Testing: http://www.n54tech.com/forums/showthread.php?t=37518

Haha always on top!

thats awesome hopefully it has some potential

That's awesome dude CONGRATS!!

I have a feeling these things are going to be pretty quick. Looked like a tubular manifold with a twin scroll. looks promising but time will tell.

:spend:

would be fun to see the tuning difference in the B58 vs N55

a fun read
http://blogs.youwheel.com/2015/06/12...linder-engine/

BMS always on top of things!!!

What other options did you get?

That is a great read. Short and informative my favorite!

If that thing makes more power than our n55 easier I'm lighting my car on fire

Backup camera only. I rarely get any options on the development cars. :)

Nice fine! I didn't know it was closed deck. :burnrubber:

No M-Sport to get rid of the 130mph limiter? :eek:

Didn't you learn your lesson with the N55 135i? :lol

Can't wait to see it but where the heck are you going to put it?:popcorn

*Like* on the color!

Interesting article, air to liquid intercooler and a mechanical water pump..

I really like the design of the turbo manifold, almost looks like an equal length,

does it look like the exhaust side will be a 4" down-pipe?

http://blogs.youwheel.com/wp-content...58_Turbo_1.jpg

im sure everyone are wondering if the turbo manifold fits the N55 ;)

Can't wait to see what this thing can do. Oh man I hope they make an M240i.

lol I know. The N18 MINI and 2011 white 335i are both scheduled to be decommissioned soon. Should free up some spots. :)

small correction ;)

Hi Terry, it will be better than you expect. High standards here. Maybe we will throw in a water/meth system aswell.

This is exciting news! Leave it to BMS to be on the leading edge for development.

This caught my attention also. I'm indifferent to the intercooler, but the mechanical water pump should live longer than these electric ones.
The rear timing chain sounds like the pita.

Just put a $1000 water pump in my 135i convertible at 70,000 miles. My mechanic was mildly impressed it lasted so long.

Two months ago I put a $70 water pump in my 10 year old Nissan truck at 175,000 miles - my first repair outside of three batteries, oil, and brake pads.

My 135i is pushing $30,000 in repairs in the first $70,000 miles. Worst car I've ever owned by 10x, but thanks to Terry at least it's fun!

I've only had mine for a short time. I've encountered a few issues, but so far (knocking on wood) nothing I couldn't take care of myself.
¡ enjoy driving it, and am looking forward to a few more upgrades. Jb4, and filter were my first, now contemplating a ********. (Noise vs power)