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Terry @ BMS Terry @ BMS is offline
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Default JB4 for 2018+ F90 M5/M8 - 03-28-2018, 06:50 PM

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.

This is the central point of contact for all 2018+ F90 JB4 related information. Anything from install directions, to firmware updates, to settings, to frequently asked questions. Any and all relevant info is linked in this post. If you come across something missing from here be sure to let us know.

Order the full F90 JB4 system here.

Map changes, datalogging, updates are done using the BMS data cable or the JB4 Mobile bluetooth kit.

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

Map Guide as of v6 firmware:

Map 0: Stock operation, JB4 disabled
Map 1: Default performance map, 4psi peak request over stock
Map 2: 6psi peak request over stock
Map 3: 25psi absolute boost profile
Map 4: 26psi absolute boost profile
Map 5: 27psi absolute boost profile
Map 6: User adjustable map. RPM1500 values of less than 6psi make map6 additive target based, values over 7psi make map6 absolute target based.
Map 7: Water/meth (WMI) progressive safety map, boost target determined by WMI additive
Map 8: Low boost VALET & safety map

Note: boost levels > 22psi requires good 93 octane fuel, and > 25psi we suggest unleaded race gas mixtures or octane booster.

Note to properly delete fault codes on the F90 the car must be in diagnostic mode first. With your foot off the brake press the ignition button 3 times fast. All lights will appear on dash.


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


1) Revised map2 as an additive map with a peak request of 5psi over stock
2) Enabled EWG control for map1 and map2, for vehicles where the optional EWG connections have been attached.
3) Fixed bug with startup EWG fault appearing on some models.


1) Redesigned boost by gear system. Boost in 1st, 2nd, and 3rd gear now represents the amount of boost to subtract from the boost target. This allows you to set boost lower than stock when slippery track conditions dictate. When using launch mode of the car "bogs" shortly after the launch reduce boost in 1st gear until you're able to get a clean launch.
T1) Adjustments to FF under absolute target maps to improve boost targeting.


1) Adjusted map1 to peak request of 4psi over stock, to match new BMS Stage1 mapping. Making Stage1 and JB4 map1 effectively similar tuning.
2) Reworked the code reading function so codes are properly read from both ECU's independently. May require interface update to work properly, if you have problems reading codes with this update, contact Donnie for the BETA JB4 Mobile interface.
3) Added higher boost map5 @ 26psi peak, and map7 @ 27psi peak, for those looking to push records on straight MS109 racing fuel.


1) Revised boost mapping to improve partial throttle smoothness on absolute target maps 2 & 3.
2) Adjusted map4 to an 8psi VALET map. Perfect for when you want to save gas or lend the car to "friends".
3) Revised boost by gear logic for improved performance. You can now target boost below the factory target if desired.
4) Wastegate control logical change to improve boost targeting during runs with multiple shifts, like 1/4 mile runs.
TEST2: Fixed some minor bugs with TEST1 on partial throttle control
TEST3: Further low throttle refinement

Default settings:

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Map Switch In Dash:

How to attach BlueTooth kit:

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.

Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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