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Terry @ BMS Terry @ BMS is offline
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Join Date: Jan 2008
Default JB4 for 2018+ Jeep Wrangler/Cherokee 2.0L - 11-21-2019, 06:28 PM

Working on setting this thread up. A lot of the information below is from our Alfa JB4 which shares the same engine platform and will be updated with Jeep specific information in the near future!

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.

By default the JB4 ships on map1. For higher boost map, logging, firmware updates, and other features, you'll need a JB4 Mobile adapter for wireless connection to your phone or a BMS data cable for wired connection to a laptop.

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

Installation guide Click Here

Map guide as of v3 firmware (selected via JB4 Mobile/laptop interface. Map1 is the default map)

Map 0: JB4 disabled
Map 1: 4psi over stock tapering to 2psi at redline.
Map 2: 5psi over stock tapering to 3psi at redline
Map 3: 6psi over stock tapering to 4psi at redline
Map 4: Coming soon!
Map 5: Coming soon!
Map 6: User adjustable map
Map 7: Coming soon!
Map 8: VALET / Low Boost map



Initial platform firmware

Attached Files
File Type: hex JB4_JEEP_1.hex (45.1 KB, 520 views)
File Type: hex JB4_JEEP_1_T4.hex (45.3 KB, 600 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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