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Terry @ BMS Terry @ BMS is offline
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Default MINI B38/B48 BMW X1/X2 JB4 - 08-27-2015, 03:01 PM

Use subject to terms and conditions posted at

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.

Hey guys,

The MINI B38/B48 JB4 is a new CANbus enabled tuning system offering a lot more features & function than our previous Stage1 system. The CANbus data allows us to provide more comprehensive and dynamic tuning, advanced features like code read/delete, in dash map switching, boost targets by gear to improve traction, an in dash boost gauge, and much more.

JB4 Interface: Latest Interface Download. When updating your interface you may need to first go to "add remove programs" and "remove" your previous JB4 interface.

If you need directions on how to connect a laptop to your JB4 to update firmware or how to datalog Click here.

MINI JB4 B38/B48 Map Guide:

Map0: Disable JB4 all together
Map1: 4psi peak over stock
Map2: 6psi peak over stock
Map3: Progressive WMI map (under development)
Map4: Stock tuning with JB4 active for logging and in dash gauges
All other maps: Not defined, do not use

'OBDII In Dash Menu

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.

Dash mode: By pressing and holding the BC button you'll enter dash mode. The left blinker will turn on and the tach/speedo will drop to zero. To toggle through menu systems press and release the BC button. Note as the speedo modes with each BC press it will not necessarily align with speedometer needle position. The speed = 0 starting menu is for maps with the current map being shown by the tach needle. To change a setting when on the menu you want to change press and hold the BC button. The right arrow will light up and now pressing the BC button will move the tach needle to let you change settings. When the needle is aligned with the intended setting, for example to change to map2 then speedo=0, tach=2000rpm, you'd press and hold the BC button. The blinkers will flash twice and the in dash menu system will close. When you go back in to the menu system you'll note the map has been updated.

'0 map menu, map shown on tach (tach shows Map)
'1 Active Sound MUTE. (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. (Tach = boost cap / 3)
'6 2nd gear boost limiter. (Tach = boost cap / 3)
'7 3rd gear boost limiter. (Tach = boost cap / 3)

Default MINI B38/B48 Settings:

Name:  mini_b48_defaults.jpg
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Attached Images
Attached Files
File Type: hex MINI_B38_B48_OBDII_4.hex (68.8 KB, 2522 views)
File Type: hex MINI_B38_B48_6_2.hex (68.5 KB, 748 views)

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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