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Terry @ BMS Terry @ BMS is offline
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Default JB4 for 2018+ AUDI RS3 & TTRS - 12-01-2018, 11:38 AM

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

Order here: http://www.burgertuning.com/vw_volks...Jb4_tuner.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.

We'll use this thread for our upcoming Audi RS3 & TTRS JB4 SENT BETA updates, map guides, firmware, and discussion!

Install Guide here: http://www.n54tech.com/flash_files/audi_s4_install.pdf

Optional map changing, datalogging and updates are done using the BMS data cable or JB4 Mobile REV3 bluetooth kit.

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

Map guide as of v4 firmware:

Map0: Stock tuning, disable JB4
Map1: (default map) 2psi peak over stock
Map2: 3psi peak over stock
Map3: 4psi peak over stock
Map4: 5psi peak over stock
map5: 6psi peak over stock
Map7: Integrated WMI (water/meth) map, progressive control with boost increased as a function of fluid flow up to the user defined WMI additive.
Map8: Valet/Low Boost/Safety map. Runs 25% less boost than stock.

Dragy results:
10.8s all stock on JB4+E30: N54Tech.com - International Turbo Racing Discussion - View Single Post - JB4 for 2018+ AUDI RS3 TTRS



1) Adjusted map5 to target up to 7.5psi over stock, for those running E30 or unleaded race gas who want to push things a bit. Results in around 22psi in most situations.
2) Adjusted shift boost reduction logic to further reduce boost spikes during shifts. Default setting is shift reduction = 50. A higher value will reduce boost more during shifts and a lower value less.
3) Minor adjustments to boost ramp in to improve operation under boost limiting/loss of traction situations.
4) Added support for low fuel pressure hardwire connection to monitor and rescale, allowing some fuel trim reduction in heavy E85 mixtures. Requires harness addition so is just under testing for specific cars for now.


1) Various minor map and tuning revisions.


1) Revised boost targets per map
2) Added direct boost control logic allowing dramatically more boost than is possible previously. Enabling this unique feature requires purchasing the optional BCM module.
3) Revised logging channels to include high fuel pressure on a scale of 0-50 = 0-3000psi.
4) Revised logging channels to add road speed
5) Added in over boost and lean-run JB4 safety systems. If boost exceeds user adjustable "boost safety" setting for more than 1 second the JB4 will switch to map0 (disabled). If AFR goes leaner than 15:1 at full throttle for more than 1 second the JB4 will switch to map0 (disabled). More advanced user adjustable safety systems including the ability to failsafe to less boost than stock (for flashed cars) is under development.


1) Adjusted warm up temperature safety to avoid bug with it kicking in when car is heated up.
2) Adjusted cyl 2-5 logging parameters so they show much higher values, to make boost/octane evaluations easier.
3) Created a firmware split so "S4" firmware will be used for all six cylinder models, and "RS3" firmware for all five cylinder models.

FutureUseD Bit Settings as of v3 firmware:

Bit4: Turn on to disable JB4 passive safety systems (over boost safety, lean run safety)
Bit5: Turn on to disable extended Audi logging channels (knock 2-5, dme bt, ecu_psi, fp_h, gear). Disabling these channels doubles the sampling speed of the primary channels.

Default BCM settings:

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How to update firmware via JB4 Mobile:
Attached Files
File Type: hex JB4_AUDI_RS3_TTRS_3.hex (52.8 KB, 159 views)
File Type: hex JB4_AUDI_RS3_TTRS_4_T3.hex (57.2 KB, 178 views)
File Type: hex JB4_AUDI_RS3_TTRS_5.hex (59.5 KB, 207 views)

Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

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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