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Ready to take your turbo //M vehicle to the next level?
The ultimate tune for your S55 powered vehicle, the JB4 allows you to go from factory stock to full race, and everywhere in between, with the push of a button on your steering wheel. The JB4 installs and removes easily and includes many unique features not found in any other tune including user adjustable 1st and 2nd gear boost limiting, map switching in dash, electronic wastegate control, ethanol fuel support, and built in advanced CANbus based diagnostic tools. Installation is completely removable with no splicing or cutting of factory wires.
For the latest performance results, updates, firmware, and map guide be sure to visit N54tech.com.
JB4 Map Guide Map 0: Disable JB4 / Full Pass Through Mode Map 1: Stage1 map adding approximately 40whp and 40wtq across the power band on pump gas. Suitable for all stages and fuel mixtures. Map 2: Slightly more aggressive version of map 1 intended for vehicles with exhaust modifications and 93+ octane fuel. Can also be used with E85 and racing fuel mixtures. Map 3: Slightly less aggressive version of map 1 intended for vehicles running on lower grade fuels such as 91 octane. Map 4: OEM performance but with JB4 active for diagnostics only. Map 5: //M low torque / linear throttle map. Map 6: Custom tuning map. Map 7: Race gas map. Requires 100 octane unleaded fuel and for the fuel mass connector to be installed. This map can also be used with up to 35% E85. Map 8: Methanol injection map. Requires BMS FSB controller or methanol kit for progressive mapping and safety systems.
Compatibility Check
To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your registration number(UK) or the last 7 digits of your VIN. Simply enter your car details prior to checkout.
Compatibility
2018+ F87 M2 Competition (S55)
2014+ F80 M3 (S55)
2014+ F82 M4 / M4 CS (S55)
Warranty
5 Year BMS Repair Warranty
Manufactured by
Burger Motorsports
Part Number
F-S55-JB4
JB4 Dyno results (Click to enlarge)
JB4 on stock car
JB4 with upgraded turbos
JB4 on stock car with 5 gallons of E85 mixed with 91
Dragy run on Stock F87 LCI M2 Competiton with unfinished custom map6 setup
JB4 Optional Phone Software
Change maps on the fly
JB4 S55 CAN Flap DEMO
Next Day UK Delivery
Get FREE Guaranteed next day UK delivery for orders over £50 (exc. VAT) on all in stock items. Same day dispatch available if your order is placed before 11:00 GMT on all in stock items!
Worldwide Shipping
We ship worldwide via DHL International, simply enter your full address at checkout to see the shipping option(s) and quote(s). Same day dispatch available if your order is placed before 11:00 GMT on all in stock items!
Very good communication with MLperformance and fast shipping! The JB4 had old firmware with bugs, I had to contact Terry from BMS to send updated firmware to fix it, but after that everything works fine. I will order again soon.
Very easy to order from ML performance with first class service , nothing is to much trouble and package came very quick boxed up well , will be my first choice for ordering from again
Romania