Audi GEN 3B A3 8V, A4 B9, A5 B9 Performance Tuner

The JB4 is a plug and play Audi tuner that plugs into easy access sensors in the engine bay 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

Now includes the JB4PRO adapter and free app built in!

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 the optional wireless JB4PRO bluetooth 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. 5-year warranty.

For Extra Ordinary Performance, Purchase Tuner with Downpipe

JB4 Map Guide: Click Here

Wirelessly Connect to your JB4: Our all-new JB4 PRO smartphone connection is included to wirelessly connect the JB4 tuner to your Bluetooth 4.0 compatible iOS or Android device. This option allows 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. Our new adapter fits fully inside the JB4 enclosure for enhanced weather protection and a more streamlined look. The JB4PRO Free app features an intuitive easy-to-use interface, help buttons, and advanced log analysis tools that can estimate the performance of your car and help identify any tuning concerns. 

For more information about the JB4PRO mobile app click here.

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
• 5-year warranty

Vehicle Fitment

Audi

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

Skoda
• 2017+ Skoda Kodiaq 2.0T 180hp

Seat
• 2017+ Seat Ateca 20T 190hp

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

If you don't find your model, Please check below or contact [email protected] for faster service. 

• 2.0T JB4 Tuner For Audi A3 8V AWD, TT 8S, Q3 F3 & VW MK7 GTI
• 2.0T JB4 Tuner For Audi S3 8V, TTS 8S and VW MK7 Golf R
• 2.0T JB4 Tuner For 2017-2021 Audi A4, A5, A6, Q5, Q7 (248HP/252HP)
  

Audi JB4 Mobile demo video