True Plug & Play Tuning

JB4 Group 8

The JB4 is a plug and play Audi tuner that plugs into easy access sensors in the engine bay and works with your factory ECU tuning to remap your boost, timing, and fueling for optimal performance and reduced turbo lag. It features a 64mhz processor allowing sensors to be sampled 800 times per second using dedicated 10 bit digital to analog converters, ensuring smooth and powerful performance. Minimum power gains of 30whp and 45ft lb on 91AKI/95Ron

Unlike other tuning systems, the JB4 includes a fully programmable CANbus system, at-home upgradable firmware, and data logging capability. CANbus allows the JB4 to access engine data to take into account pedal input, throttle position, gear, engine speed, air/fuel ratio, fuel trims, ignition advance, knock, and many other factors and incorporate those into the performance mapping. It can also read/delete fault codes, incorporate unique safety features such as keeping boost pressure low until oil and water is up to temperature to provide proper engine and turbo lucubration and drop to a low boost map if the engine starts to overheat, run lean, excessively knock, or over boost.

The default JB4 map1 runs 3psi over stock peak and tuned maps, including stock and valet mode, can be selected on the fly using a BMS diagnostics cable or JB4 mobile smartphone adapter.
Installation is very discrete, and it quickly removes without a trace when needed. Fuel economy during normal driving is unchanged. Compatible with all driving modes. Made in the USA. 5-year warranty.

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.

JB4 Features & Benefits

Minimum power gains of up to 30hp and 45tq to the wheels on a stock vehicle
Improves 0-60 times and 1/4 mile times
Preloaded with custom 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
Free USA Shipping
5-year warranty

Vehicle Fitment

Audi
2017-2021 Audi 8V A3 FWD 2.0T 184hp
2017-Present Audi B9 A4 2.0T 190hp
2017–PresentAudi B9 A5 2.0T 190hp

Skoda
2017–PresentSkoda Kodiaq 2.0T 180hp

Seat
2017–PresentSeat Ateca 20T 190hp

Volkswagen
2017–PresentVW Aerton 2.0T 190hp
2017–PresentVW Tiguan 2.0T North American
2017–PresentVW Tiguan 2.0T 140kw/184hp
2017–PresentVW T-Roc N1 2.0T 184hp
2018–PresentVW Passat 2.0T North American 174hp
2018–PresentVW Polo GTI AW 2.0T 200hp