For owners of the 2024 Bmw 340i looking to elevate their driving experience, the JB4 tuner emerges as a leading solution. This plug-and-play performance upgrade is specifically engineered for the B58 engine, delivering significant power gains without the need for ECU flashing or complex modifications. Imagine unlocking up to 120whp and 120wtq on your stock 2024 BMW 340i, transforming your daily drive into an exhilarating adventure.
The JB4 system stands out as the most sophisticated and feature-rich tuning option available for BMW’s B58 powertrains. It’s designed for simple installation and removal, featuring a user-friendly plug & play harness. Unlike other tunes, JB4 offers on-the-fly map switching directly from your dashboard, allowing you to choose between factory settings and multiple performance maps. Further customization includes optional in-dash gauge displays for monitoring boost levels, gear-based boost limiting for enhanced traction, and progressive water/methanol support for advanced tuning enthusiasts. Built-in data logging and code reading capabilities add to the comprehensive functionality of this system. For those seeking even greater control, optional direct EWG (Electronic Wastegate) control prevents throttle closure with exhaust upgrades, and exhaust flapper control allows for sound customization. While some tuners may claim comparable technology, a closer look reveals that they often lack the extensive features that define the JB4.
Remember, the JB4 is a standalone upgrade. No prior modifications or stages are required. Install the JB4 as your first and only enhancement to experience a dramatically faster and more responsive 2024 BMW 340i. The JB4 operates seamlessly without requiring user setup, but for those keen on data analysis, accessing new features, and staying updated, the BMS DATA cable or REV3 mobile phone adapter are recommended.
Wirelessly connect your JB4 to your compatible iOS or Android device via the JB4 Mobile connect kit, or to your Windows laptop using the BMS data cable. Both options provide access to crucial vehicle and tuning data for recording and analysis. You can effortlessly switch between JB4 performance maps and update the JB4 firmware as Burger Motorsports releases free updates. These updates include enhanced maps and new features under continuous development, ensuring your 2024 BMW 340i stays at the forefront of performance tuning. A separate JB4 Mobile app purchase is necessary to utilize the mobile connectivity features.
JB4 Map Guide for Your 2024 BMW 340i
The JB4 offers a range of pre-configured maps to suit various fuel grades and performance preferences for your 2024 BMW 340i:
Map0: Stock mode – fully disables the JB4 for a factory driving experience.
Map1: Adds 3psi over stock boost, optimized for 91 octane fuel.
Map2: Adds 4psi over stock boost, recommended for 91-93 octane fuel.
Map3: Adds 6psi over stock boost, designed for 93+ octane fuel for maximum performance.
Map4: Absolute target map with a peak boost target of 20psi, requiring 93+ octane fuel and/or 30% E85 blend. EWG connector is suggested for optimal performance.
Map5: Absolute target map pushing to a peak boost target of 22psi, demanding 30% E85+ fuel blend and EWG connector.
Map6: Custom tuning map – allows for personalized tuning adjustments. Refer to JB4tech.com B58 JB4 page for detailed guidance on custom mapping.
Map7: Progressive Water-Methanol Injection (WMI) map – tuning dynamically adjusts based on methanol flow and user-defined boost additive.
Map8: Valet/Low Boost Map – reduces power output for valet parking or conservative driving.
Note: For 2018+ G chassis vehicles with digital dashboards, in-dash control via JB4 commands is anticipated in a future firmware update. Currently, a JB4 mobile adapter or BMS data cable is needed for map and setting adjustments on these models.
This JB4 model is compatible with both GEN1 and GEN2 B58 engines, ensuring fitment for your 2024 BMW 340i (G20/G21 generation with GEN2 B58). For the latest B58TU2 GEN3 engines, please consult the dedicated product page for the compatible JB4 version.
The JB4_B58 is CARB Approved under Executive Order (EO) No.D-744-4 for 2016-2018 BMW 340i models, and although specific CARB approval may vary for the 2024 model year, the underlying technology and emissions considerations remain consistent with earlier approved models. Always check local regulations regarding emissions compliance for performance modifications.
JB4 Power Gains, Features, & Benefits for Your 2024 BMW 340i
• Significant Power Gains: Experience up to 120whp increase on a stock 2024 BMW 340i, transforming its performance.
• Improved Acceleration: Noticeably improves 0-60 mph and quarter-mile times, providing quicker and more responsive acceleration.
• Preloaded Performance Maps: Comes preloaded with JB4 BMW tuning software and up to 8 maps tailored for various fuel types and modification levels, ready for your 2024 BMW 340i.
• Ethanol (E85) Compatibility: Includes maps optimized for ethanol blends, allowing for higher performance with E85 fuel mixtures in your 340i.
• Diagnostic Capabilities: Read and delete vehicle fault codes directly using the JB4 system.
• Real-time Data Monitoring: Utilize the JB4 app to view and record up to 40 different engine parameters in real-time, providing comprehensive insights into your 2024 BMW 340i’s performance.
• Boost-by-Gear Control: Manage boost levels in 1st, 2nd, and 3rd gear via the JB4 app, optimizing launch control and traction for your 340i.
• Exhaust Flap Control: Control exhaust flap operation in most compatible applications, allowing for sound profile adjustments in your BMW.
• JB4 Mobile Compatibility: Fully compatible with JB4 Mobile app for smartphone-based logging, tuning adjustments, and convenient control.
• Superior Performance and Safety: Offers greater performance, functionality, and safety features compared to typical performance chips.
• Quick Plug & Play Installation: Designed for fast and easy installation, getting you up and running quickly with minimal downtime.
• CANbus OBDII Integration: Advanced CANbus OBDII integration provides unmatched tuning capabilities and performance optimization.
• Enhanced Performance Over Non-Integrated Tunes: Delivers superior performance gains compared to less sophisticated, non-integrated chip tunes.
• Smooth and Refined Performance: Operates with the smoothness of factory tuning, feeling like the performance your 2024 BMW 340i should have had from the start.
• Driving Mode Compatibility: Seamlessly integrates with all of your BMW’s factory driving modes.
• Unchanged Fuel Economy in Normal Driving: Maintains factory fuel economy during normal driving conditions.
• 91 Octane or Better Required for Performance Gains: Performance gains are optimized for 91 octane fuel or higher.
• Removable and Resellable: Not VIN locked, allowing for easy removal without a trace and potential resale.
• Durable Construction: Includes a rugged JB4 billet aluminum enclosure for robust protection.
• Designed and Assembled in the USA: Proudly designed and assembled in the USA, ensuring quality and performance.
• Free USA Shipping: Enjoy complimentary shipping within the USA.
• 5-Year Warranty: Comes with a comprehensive 5-year warranty, providing peace of mind.
Vehicle Fitment (GEN1 & GEN2 B58) – Including 2024 BMW 340i (G20/G21 GEN2)
The JB4 is compatible with BMW models equipped with GEN1 or GEN2 B58 engines, including the 2020-2024 G20 G21 GEN2 B58 BMW M340i including xDrive which shares the same engine as the 2024 BMW 340i.
BMW 3 Series
• 2020-2024 G20 G21 GEN2 B58 BMW M340i including xDrive
• 2016-2018 F30 GEN1 B58 BMW 340i including xDrive
Note: While the list primarily mentions M340i models for the G20/G21 chassis, the GEN2 B58 engine and JB4 compatibility extends to the standard 2024 BMW 340i models as well. If you have a GEN1 OR GEN2 B58 engine and don’t see your exact model on the list below please email us to confirm fitment. For the newest B58TU2 GEN3 motor, please refer to the specific product page designed for those engines.
BMW 1 Series
• 2016-2019 F20 F21 GEN1 B58 BMW M140i
BMW 2 Series
• 2022+ G42 GEN2 B58 BMW M240i including xDrive
• 2016-2021 F22 F23 GEN1 B58 BMW M240i including xDrive
BMW 4 Series
• 2021-2024 G22 G23 G26 GEN2 B58 BMW M440i including Gran Coupe and xDrive
• 2016-2020 F32 F33 F36 GEN1 B58 BMW 440i including Gran Coupe and xDrive
BMW 5 Series
• 2017-2023 G30 G31 GEN2 B58 BMW 540i including xDrive
BMW 6 Series
• 2018-2023 G32 G33 GEN2 B58 BMW 640i including xDrive
BMW 7 Series
• 2016-2022 G11 G12 B58 BMW 740i including xDrive
BMW 8 Series
• 2018+ G15 G14 G16 GEN1 & GEN2 B58 BMW 840i including Gran Coupe and xDrive
BMW X Series
• 2018-2024 G01 B48 B58 BMW X3 2.0i, X3 3.0i, X3 M40i including xDrive
• 2019-2024G02 B48 B58 BMW X4 2.0i,X4 3.0i,X4 M40i including xDrive
• 2019-2022 G05 B58 BMW X5 40i including xDrive
• 2020-2023 G06 B58 X6 40i xDrive
• 2019-2022 G07 B58 BMW X7 40i including xDrive
BMW Z4
• 2019+ G29 B58 BMW Z4 M40
What is a JB4 and Why is it Ideal for Your 2024 BMW 340i?
The JB4 is a plug & play performance tuner specifically designed for turbocharged vehicles like your 2024 BMW 340i. It installs seamlessly between your car’s sensors and the DME/ECU (engine computer), intelligently optimizing vehicle performance by manipulating sensor signals. This sophisticated approach allows your 2024 BMW 340i to achieve significantly enhanced power output. While other tuning systems operate similarly, the JB4 distinguishes itself through more advanced connection points and processing capabilities. This includes CANbus integration, precise fuel and spark control, Bluetooth smartphone connectivity, and a suite of innovative features unmatched by any other system. Burger Motorsports consistently provides free mapping and firmware updates, continuously improving performance and adding new functionalities. Furthermore, the JB4 system is not VIN-locked, offering flexibility for removal, transfer to another vehicle, or resale. As the gold standard in plug-and-play turbocharged performance tuning for over a decade, the JB4 is the trusted choice for unlocking the true potential of your 2024 BMW 340i.
Dyno Proven Performance for BMW B58 Engines – Relevant to Your 2024 BMW 340i
The dyno results below showcase the impressive gains achievable with JB4 on B58 engines, directly applicable to understanding the performance potential of your 2024 BMW 340i.
2020 BMW B58 M340i JB4 + BMS B58 Competition Intake and E30 Fuel Blend
2016 BMW 340xi B58, JB4, Stock Components, 93 Octane vs E30 Fuel Blend
2020 B58 Powered BMW Z4 Dyno – 490whp with JB4 Map 5 and E40 Fuel Mixture
Download the JB4 Installation Guide
California Customers: Download the CARB Version Installation Guide
