Group 4: JB VW Performance Tuner

JB1 Stage 1 Group 4

A true plug & play tune offering 45whp and 45ft-lb torque

The JB1 is a true user adjustable plug and play solution for all MQB-based models in the VW Audi Group range. Power Gains on GLI: Starting at 35whp and 45ft-lb with 91 octane with + 3.5psi boost over stock on the default setting or 4.0psi over stock for 93. Engine estimates are 50bhp gained and 55ft-lb. Power Gains on 1.8T: 30whp and 50ft-lb on 91 octane.

JB4 Group 4

The JB4 is a true user adjustable plug and play solution for Gen3 Jetta GLI and Turbo Beetle. Power Gains: Starting at 55bhp and 60ft-lb with 91 octane/95Ron with + 4.0 psi boost over stock on the default setting. Up to 80bhp and 80ft-lb with bolt-on modifications, higher octane, and boost adjustment with the optional BMS Data Cable. 

The JB4 features CANbus connectivity for more advanced tuning, direct AFR control, advanced safety systems for boost, air/fuel ratio, fuel trims, and engine knock, boost mapping by gear for improved traction, integrated water/meth control, and much more.

The unit can be used with our JB4 Bluetooth Connect kit providing for full in-car engine parameter display, map switching, and adjustment The JB4 can also be stacked over flash tuning allowing for fine-tuning as well as meth control with safety measures in place and full logging.

Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android device via the JB4 Mobile connect kit or to your Windows laptop with the BMS data cable. Both options allow you to record and analyze vehicle and tuning data, change JB4 performance maps, and update JB4 firmware as we release free newer versions with updates, more powerful maps, and new features under development. A separate JB4 Mobile app purchase is also required.

The JB1 and JB4 are compatible with all the below models and have been tested in all markets and on all year models. 

Vehicle Fitment

Volkswagen

• 2013.5-2018 VW Jetta MK6 GLI Gen 3 

• 2013-2020 VW Beetle 2.0T Gen 3

• 2014-2020 VW Beetle 1.8T 

• 2014-2019 VW Jetta 1.8T Gen 3 170hp

• 2014-2019 VW Passat 1.8T Gen 3 170hp

JB4 Features & Benefits

• Improves 0-60 times and 1/4 mile times

• Preloaded with custom VW tuning software and up to 8 maps for various fuel and modification levels

• The JB4 offers a lot more performance, functionality, and safety than your average performance chip

• Quick Plug & Play Installation

• CANbus OBDII integration offering unrivaled tuning features and performance

• Improved performance over non-integrated chip tunes

• Runs as smoothly as stock, this is how your vehicle should have come from the factory

• Compatible with all driving modes

• Fuel economy unchanged during normal driving

• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment

• 91 octane fuel or better required for performance gains

• Ethanol (E85) compatible tuning maps

• Able to read/delete fault codes

• Not VIN locked and can be removed without a trace and resold down the road

• Made in the USA

• 5-Year warranty

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.

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