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Burger Tuning E Chassis N55 BMW JB4 Tuner

$479.00
Weight:
1.00 LBS
Shipping:
Calculated at Checkout
Burger Tuning E Chassis N55 BMW JB4 Tuner

Description

E-Chassis N55 BMW JB4 Tuner – Advanced Plug-and-Play Power Upgrade

Unlock the full performance potential of your N55-powered BMW with the JB4 Performance Tuner, the most advanced and feature-rich plug-and-play tuning solution available for the E-chassis platform. Designed for enthusiasts who want maximum power with OEM-grade drivability, the JB4 delivers impressive increases of up to 60whp and 60wtq on a completely stock vehicle while maintaining factory reliability and safety systems.

Engineered with full CANbus OBDII integration, the JB4 actively monitors and adjusts boost, timing, fuel trims, and various engine parameters in real time. This allows the tuner to provide smooth, predictable power delivery that adapts to your vehicle’s fuel quality, climate conditions, and hardware modifications. Whether your BMW is stock or tastefully upgraded, the JB4 is designed to grow with your build.

Advanced Features & Tuning Capability

The JB4 includes up to 8 preloaded tuning maps tailored for different fuels and modification levels, including full support for ethanol (E85) blends. With the integrated JB4PRO app (free to download), drivers can monitor up to 40 real-time engine parameters, record data logs, adjust user settings, and control advanced features such as:

  • Boost-by-gear control for improved launches

  • Adjustable exhaust flap operation (supported on most applications)

  • Instant map switching from your mobile device

  • Code reading and fault clearing

This advanced level of adjustability gives you true tuning freedom without the need to unlock your ECU or permanently alter your vehicle’s factory software.

Smooth, OEM-Like Driving Experience

While the JB4 delivers major gains in acceleration and peak performance, it is engineered to maintain factory refinement. During normal driving, fuel economy remains unchanged, throttle response stays smooth, and all BMW driving modes remain fully functional. The tuner is fully reversible and not VIN-locked, allowing it to be removed without a trace and resold if desired.

Simple Plug-and-Play Installation

Installation requires no cutting, splicing, or ECU flashing. The JB4 installs using a high-quality harness designed specifically for the N55 engine, providing a clean, secure, and fully reversible upgrade. Designed and assembled in the USA, the JB4 includes a 5-year warranty for long-term reliability.

N55 JB4 Features & Benefits

  • Gains of up to 60whp / 60wtq on a stock N55

  • Faster 0–60 mph and ¼-mile acceleration

  • Preloaded with up to 8 tuning maps for various fuels and mods

  • Full E85 ethanol compatibility

  • Read and delete fault codes

  • View & record up to 40 live engine parameters via the FREE JB4PRO app

  • Boost-by-gear control for 1st–3rd gear

  • Exhaust valve/flap control (most applications)

  • Smartphone logging & tuning adjustments (JB4PRO app)

  • More features, performance & safety than standard piggyback chips

  • Quick plug-and-play installation

  • Full CANbus OBDII integration for industry-leading precision

  • Smoother-than-stock power delivery

  • Works with all factory driving modes

  • No impact on fuel economy during normal driving

  • Requires 91+ octane for performance maps

  • Not VIN-locked; fully removable and resale-friendly

  • Designed & assembled in the USA

  • Includes 5-year warranty

N55 JB4 Vehicle Fitment

BMW 1 Series

  • 2011–2013 E82/E88 135i (LHD, N55)

BMW 3 Series

  • 2011 E90/E91 335i (incl. xDrive, N55)

  • 2011–2013 E92/E93 335i (incl. xDrive, N55)

BMW X Series

  • 2013–2015 E84 X1 xDrive35i

  • 2011–2013 E70 X5 35i (incl. xDrive)

  • 2011–2013 E71 X6 35i (incl. xDrive)

What Is a JB4?

The JB4 is an advanced plug-and-play performance tuner for turbocharged vehicles. It intercepts and optimizes the signals between the engine sensors and the ECU/DME to produce more power, improved throttle response, and enhanced drivability. Unlike basic piggyback systems, the JB4 features:

  • Full CANbus integration

  • Fuel and spark control

  • Wireless Bluetooth connectivity

  • Real-time tuning logic

  • Data logging & fault code tools

  • Ongoing development with free firmware updates

The JB4 is not VIN-locked, can be transferred between vehicles, and can be uninstalled without any ECU flags—making it a flexible, future-proof tuning solution used in more than 67 countries worldwide.

Is the JB4 a Real Tune?

Yes. The JB4 provides tuning control comparable to an ECU flash by modifying boost, timing, AFR, and fuel trims using real-time CANbus data. The major advantage is that it delivers these gains without requiring ECU unlocking, and it preserves all factory safety protocols. The result is strong, smooth, and reliable performance with no permanent changes to your vehicle’s software.