[Terry @ BMS]

Use subject to terms and conditions posted at http://www.burgertuning.com/terms.html

THIS PART IS LEGAL FOR USE ONLY IN COMPETITION RACING VEHICLES AS DEFINED UNDER CALIFORNIA LAW, AND IS NOT LEGAL FOR USE IN ANY OTHER MOTOR VEHICLE. California law defines a "racing vehicle" as "a competition vehicle not used on public highways." (Calif. Health & Safety Code 39048) This part may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event. Competition-only motor vehicles may not be driven to a racing event on a public highway and must be transported on a trailer or other carrier. USE OF THIS PART IN ANY OTHER VEHICLE MAY SUBJECT YOU TO FINES AND PENALTIES FOR VIOLATION OF FEDERAL AND/OR STATE LAW, WILL VOID YOUR WARRANTY FROM BURGER MOTORSPORTS, INC, AND CAN VOID YOUR VEHICLE'S WARRANTY. It is your responsibility to comply with all applicable federal and state laws relating to use of this part, and Burger Motorsports, Inc hereby disclaims any liability resulting from the failure to use this part in compliance with all applicable federal and state laws.


http://www.burgertuning.com/N20_Jb4.html

Hey guys,

We'll use this post as a single point of reference for all information related to the N20/N26 JB4!


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


Installation guide here: http://burgertuning.com/instructions/JB_n20_install.pdf

JB4 Map Guide

Map 0: JB4 disabled.
Map 1: PWG models absolute target 21psi peak, EWG models additive 4psi peak over stock.
Map 2: PWG models absolute target 22psi peak, EWG models additive 6psi peak over stock.
Map 3: Progressive Methanol Injection. Requires BMS methanol kit or BMS FSB for meth pump control.
Map 4: Stock performance, JB4 on
Map 5: Absolute targeting map with a peak boost 17psi. Suitable for 320 & 520 applications.
Map 6: User definable absolute target map. Suggested for troubleshooting by professionals only.
Map 7: Race gas absolute target map. Peak boost 23psi. This is a fairly aggressive map and increases engine damage risk. Use with caution.

JB4 E85 Use

If equipped with the Fuel Pressure add on connector E85 mixtures may be used with pneumatic wastegate x28i models and the x20i electronic wastegate models. E85 mixtures are not suggested for the electronic wastegate x28i model as the high pressure pump may have a hard time keeping up with fuel volume demand. When using E85 a mixture of no more than 40% is suggested.

JB4 Firmware

Firmware for both the F chassis pneumatic, electronic wastegate, and E chassis (X1, Z4, etc) are posted at the bottom of this post. If you decide to update your firmware be sure to upload the appropriate one for your platform.

Note models using the pneumatic wastegate, primarily 2013-early 2014 models where the JB4 harness blue patch is connected, need to use PWG firmware. Those equipped with an electronic wastegate, primarily 2014+ models where the JB4 blue batch is NOT used, need to use EWG firmware.

EWG_6

1) Updated CANbus logging system for faster logging of all channels, including oil temp, water temp, trans temp, cyl 1-4 timing, etc.
2) Added load and calculated torque logging for future N20 back end flash map development.
3) Added startup gauge sweep when JB4 is on a map > 0 where wheel controls are not disabled.
4) T1 - Slowed down CANbus speed slightly due to reports of JB4 resetting CANbus (gauge sweep triggering during driving).
5) T5 - Added option FutureUseD bit#4 to disable startup sweep for those who don't like it.

EWG Add-On Connector Installation:

1) For 328i and equivalent this connector isn't beneficial unless running meth. For 320i and equivalent it's strongly suggested.
2) Set PID Gain to 10 and AutoShiftBoostReduction to 10. We also suggest lowering FF / Wastegate Adaption manually to 50 so it can learn itself up or down. All other settings are unchanged.
3) The new harness has two long wires coming from it. Purple and blue. Each will have a gold DSUB pin which is to be inserted in the JB4 harness similar to how the FlexFuel connector is added.
4) The purple wire (going to the male pin on the wastegate harness) connects to position #9 on the DB25 connector.
5) The blue wire (going to the female pin on the wastegate harness) connects to position #16 on the DB25 connector.
6) The connector itself is routed to the wastegate which is fairly easy to reach for the N2x platform. Unplug the OEM connector, attach it to the male connection, and plug the new female connection in to the wastegate. Route the wire out of the way so it does not melt on the exhaust, etc.
7) Do a few datalogs to adapt the JB4/car and ensure boost is close to target. If not adjust FF up or down as needed.

JB4 Notes

1) The JB4 has hot & cold oil temperature protection. The tune will remain off until oil temps are > 160 degrees for proper lubrication and will disable if they exceed 280 degrees.
2) The X1 & Z4 N20 JB4 is very different than the F series N20 JB4. They use special firmware (with full dash control) and have a different CAN mounting location. The firmware is below and labeled for X1/Z4 series N20. X1 N20 JB4 Install video & details here.
3) If you don't read the install directions and accidentally install the MAF connector (purple harness loom on older harnesses) with JB4 tuning the car will run poorly and throw codes. Leave the JB4 purple harness tucked out of the way by the control box if equipped. Note as of 2014 we removed the purple patch all together form the JB4_N20 harness.
4) The firmware posted below is for the JB4 only! Do not attempt to update the firmware on a Stage1 system.

OBDII Firmware Wheel Controls and Map Switching In Dash:



OBDII FIRMWARE IN DASH GUIDE:

'***************************************
Exhaust Valve Mode:
'***************************************

Toggle between flap open, flap closed, and OEM operation, by pressing the button for 2 seconds and letting go. The left blinker will flash for valve open, right blinker for valve closed, and both blinkers for OEM operation. The valve setting is persistent and will remain in effect until you change it. If you hold the button too long you'll jump in to the in dash menu system below.

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

'0 map menu, map shown on tach
'1 Active Sound MUTE (not relevant for most N55 models) (OFF tach = 0, ON tach = 1000)
'2 Boost gauge on fuel, scaling in dash is 0 to boost safety setting, turns on when gas pedal is pressed 50% or more and turns itself off when you resume low throttle use. (OFF tach = 0, ON tach = 1000)
'3 LED MAX brightness mode. For those with factory LED headlights this option brightens HALO during nighttime operation. (OFF tach = 0, ON tach = 1000)
'4 Delete fault codes
'5 1st gear boost limiter
'6 2nd gear boost limiter
'7 3rd gear boost limiter

Install overview for the 320/328/520/528 Install:
https://www.youtube.com/watch?v=xk4ZYq0iuCE

Install guide overview for the X1:
https://www.youtube.com/watch?v=GyWgDC5wv_8

Default Settings:
Note for EWG TMAP should be set to 1 but for PWG TMAP should be set to 0.


How to update firmware:

For firmware updates 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.

[BavarianBullet]

not bad for a 4-pot. GJ BMS!

[335R1]

Pretty please something for the F30 N55....

[NICKTENN]

Originally Posted by 335R1

Pretty please something for the F30 N55....

I second this.

[Bowser330]

Originally Posted by NICKTENN

I second this.

I third this!

Selling my E92 to get into a F30 M Sport....

[rdeterman]

that is awesome news

[N54mike]

Is PID PSI target? Massive increase in low end torque!

[Terry @ BMS]

Originally Posted by N54mike

Is PID PSI target? Massive increase in low end torque!

No, it's the MAP boost signal. Boost is the TMAP signal. The car suffers from the same wind up boost overshoot the OEM N55 tuning does. It's much better with the tuning in place.

[Irishace]

Nice little 4 banger. The BMW tuning scene is getting better all the time. So many turbo options in the fleet.

[mykal]

So where will the WW meth kit go?

[BFD99]

That's awesome guys!

[chancejat]

terry, how come you never tuned the f10 550i?

[N54mike]

Originally Posted by chancejat

terry, how come you never tuned the f10 550i?

Too small of a market

[Terry @ BMS]

Originally Posted by chancejat

terry, how come you never tuned the f10 550i?

Maybe some day. But not enough volume to justify the investment at this time.

[JHOOPS2]

Wow Terry! And just getting started with it too. It looks like this engine will be very zippy with some tuning.

[N54mike]

Is WGDC pretty much maxed out since you think you can only get 10 more HP out ot it?

[Terry @ BMS]

Originally Posted by N54mike

Is WGDC pretty much maxed out since you think you can only get 10 more HP out ot it?

It's a little too early to start sharing much tuning info since it appears I'm the only one working on it.

[cstavaru]

What is the difference between Stock (ok, I got this), OEM Tuning and Stage1 Tuning ?

[N54mike]

Originally Posted by cstavaru

What is the difference between Stock (ok, I got this), OEM Tuning and Stage1 Tuning ?

Stock on the dyno graphs is the e90 328i with the n52 I6 motor. OEM tuning is a stock baseline for the n20 and stage 1 tuning should be obvious.

[cstavaru]

Originally Posted by N54mike

Stock on the dyno graphs is the e90 328i with the n52 I6 motor. OEM tuning is a stock baseline for the n20

Quite unnatural naming for "stock" and "oem tuning" But I get it now.

[themyst]

Looks like the stock FMIC is taking well to the increased boost pressure. Very little IAT creep!

Are you going CPS on the timing with this?

[PorkchopExpress]

Damn, you've had it what a week now, and already tuned! How long did it take you guys to tune the n55 when it first came out? And where is the air intake on the n20?

[Terry @ BMS]

Yes I had it tuned pretty much the same day. We're getting better at this. Intake is in the front. I have not flow tested it yet but seems pretty beefy for the power levels. We'll be looking at it more closely soon though. ******** too.

[bigdnno98]

Great job Terry. I have a feeling this little engine is going to be pretty fast.

[ibsr335]

Keep up the good work. Do you have any vbox numbers yet?