bootmod3 – N13 ECU Tuning for BMW 114i / 116i / 118i / 316i / 320i

bootmod3 N13 ECU tuning is a performance calibration designed for BMW vehicles equipped with the turbocharged N13 four-cylinder engine. The software recalibrates the factory engine control unit through the vehicle’s OBD interface, optimizing boost pressure, ignition timing and fuel delivery to increase horsepower, torque and overall throttle response while maintaining smooth drivability.

The tuning package includes optimized off-the-shelf performance maps designed for different fuel grades and hardware configurations. These calibrations improve engine output and acceleration across the entire RPM range while maintaining factory safety systems and engine protections.

Stage-based calibrations provide noticeable gains in engine performance depending on fuel type and vehicle configuration. Stage 1 and Stage 2 maps are available, including aggressive exhaust burble variants, allowing drivers to select different performance profiles suited to their driving style and vehicle modifications.

Advanced tuning controls allow adjustment of various engine parameters including boost targets, throttle mapping, rev limiter configuration, speed limiter removal and exhaust burble settings. The system also supports custom performance calibrations for vehicles equipped with upgraded hardware such as larger intercoolers, intake systems, downpipes or turbocharger upgrades.

Integrated data logging and engine monitoring functions allow users to analyze numerous engine parameters during operation, helping optimize tuning setups and maintain safe engine performance.

Power gains of up to 100hp on a stock vehicle without the risks of flashing!

JB4 Features & Benefits

Vehicle Fitment

What is a JB4?

The JB4 is a plug & play tune available for turbocharged vehicles. The JB4 tuner installs between your car's sensors and its DME/ECU (computer) and manipulates vehicle performance through these connections making your vehicle much faster. While it's not the only tuning system that operates this way the JB4 separates itself from the competition with much more advanced connection points and processing including CANbus, fuel & spark control, Bluetooth to your smartphone, and a variety of innovative and advanced features not possible with any other system. BMS regularly publishes free mapping and firmware updates adding performance and features as ongoing development allows. In addition, the JB4 system is not VIN-locked to your vehicle and can quickly be removed and swapped between cars or resold at a later time. Often imitated but never duplicated the JB4 has been the gold standard in plug and play turbocharged performance tuning for over a decade.

• F22 / F23 (2014+) > 230i
• F22 / F23 (2014+) > 230i xDrive
• F22 / F23 (2014+) > M240i
• F22 / F23 (2014+) > M240i xDrive
• F30 / F31 / F34 (2012-2019) > 330i
• F30 / F31 / F34 (2012-2019) > 330i xDrive
• F30 / F31 / F34 (2012-2019) > 340i
• F30 / F31 / F34 (2012-2019) > 340i xDrive
• F32 / F33 / F36 (2014-2020) > 430i
• F32 / F33 / F36 (2014-2020) > 430i xDrive
• F32 / F33 / F36 (2014-2020) > 440i
• F32 / F33 / F36 (2014-2020) > 440i xDrive

• G20 (2019+) > 330i
• G20 (2019+) > 330i xDrive
• G20 (2019+) > M340i
• G20 (2019+) > M340i xDrive
• G80 (2021+) > M3
• G80 (2021+) > M3 Competition RWD
• G80 (2021+) > M3 xDrive Competition
• G82 / G83 (2021+) > M4
• G82 / G83 (2021+) > M4 Competition RWD
• G82 / G83 (2021+) > M4 xDrive Competition
• G30 (2017+) > 530i
• G30 (2017+) > 530i xDrive
• G30 (2017+) > 540i
• G30 (2017+) > 540i xDrive
• G12 (2016+) > 740i
• G12 (2016+) > 740i xDrive
• G01 X3 (2018+) > X3 M40i
• G01 X3 (2018+) > X3 xDrive30i
• G02 X4 (2019+) > X4 M40i
• G02 X4 (2019+) > X4 xDrive30i
• G05 X5 (2019+) > X5 xDrive40i
• G29 Z4 (2019+) > Z4 M40i
• G29 Z4 (2019+) > Z4 sDrive30i

• A90/A91 (2020+) > Supra 2.0
• A90/A91 (2020+) > Supra 3.0

• F54 (2016+) > Clubman, Clubman S and JCW
• F55 (2015+) > Hatchback/Hardtop (4 door), S and JCW
• F56 (2016+) > Hatchback/Hardtop, S and JCW
• F57 (2016+) > Convertible, Convertible S and JCW
• F60 (2017+) > Countryman, Countryman S, All4 and JCW

bootmod3 S63TU4 ECU tuning is a performance calibration designed for BMW vehicles equipped with the twin-turbocharged S63TU4 V8 engine. The software recalibrates the factory engine control unit through the vehicle’s OBD interface, optimizing boost pressure, ignition timing and fuel delivery to deliver significant increases in horsepower, torque and throttle response while maintaining smooth drivability.

The tuning package includes optimized off-the-shelf performance maps developed for different fuel types and hardware configurations. Stage-based calibrations allow the engine to run optimized maps for pump fuel, ethanol blends or race fuel setups, providing substantial improvements in acceleration and overall power delivery across the entire RPM range.

Typical performance gains vary depending on fuel type and configuration. Stage 1 calibrations can deliver roughly 10–19% increases in horsepower and torque, while Stage 2 calibrations can provide up to approximately 30% gains when using higher-octane fuels or ethanol blends such as E30.

Advanced tuning features allow adjustment of several engine parameters including exhaust burble settings, throttle mapping, rev limiter configuration, boost targets and speed limiter removal. The system also supports flex-fuel configurations when paired with a compatible ethanol sensor, enabling the engine calibration to automatically adapt to varying ethanol fuel blends for optimal performance and safety.

Additional capabilities include comprehensive data logging and real-time monitoring of engine parameters, allowing detailed analysis of vehicle performance and supporting further tuning optimization for modified vehicles equipped with upgraded turbochargers, intercoolers, downpipes or intake systems.

bootmod3 N63T2 ECU tuning is a performance calibration developed for BMW vehicles equipped with the twin-turbocharged N63T2 V8 engine. The software recalibrates the factory engine control unit through the vehicle’s OBD interface, optimizing boost pressure, ignition timing and fuel delivery to significantly improve horsepower, torque and overall throttle response while maintaining smooth drivability.

The tuning package includes optimized off-the-shelf performance maps designed for different fuel grades and performance setups. Stage-based calibrations provide substantial improvements in acceleration and power delivery across the entire RPM range depending on fuel type and configuration.

Typical performance gains vary depending on the fuel used. Stage 1 calibrations can deliver approximately 14–19% increases in horsepower and up to around 27% torque gains, while Stage 2 calibrations can achieve up to roughly 24–31% horsepower increases and over 30% torque gains when using higher-octane fuels or ethanol blends such as E30.

Advanced tuning controls allow adjustment of various engine parameters including boost targets, throttle mapping, rev limiter settings, speed limiter removal and exhaust burble configuration. The software also supports custom calibrations for vehicles equipped with upgraded hardware such as larger turbochargers, intercoolers, intake systems or high-flow exhaust components.

Additional capabilities include real-time monitoring and detailed data logging of engine parameters, enabling analysis of vehicle performance and helping optimize tuning setups while maintaining safe engine operation.