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Selling Out Group 8: Jb4 Tuner Gen3b Ready To Use [vZ5Lxf2N]

$68.99 $220.99 -69%

JB4 Tuner Gen3B: Ultimate Performance Tuning SolutionThe JB4 Tuner Gen3B is a cutting-edge Audi tuner designed for true plug & play performance enhancement. This advanced device seamlessly integrates with your factory ECU, optimizing boost, timing, a

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Selling Out Group 8: Jb4 Tuner Gen3b Ready To Use [vZ5Lxf2N]

JB4 Tuner Gen3B: Ultimate Performance Tuning Solution

The JB4 Tuner Gen3B is a cutting-edge Audi tuner designed for true plug & play performance enhancement. This advanced device seamlessly integrates with your factory ECU, optimizing boost, timing, and fueling for peak efficiency and reduced turbo lag. With its 64MHz processor, the JB4 samples sensor data at an incredible 800 times per second, ensuring a smooth and powerful driving experience. Key features include:
  • Minimum power gains of 30whp and 45ft lb on 91AKI/95Ron fuel
  • Programmable CANbus system for comprehensive engine data analysis

State-of-the-Art Technical Specifications

The JB4 Tuner Gen3B boasts state-of-the-art technology that sets it apart from other tuning systems. Its dedicated 10-bit digital to analog converters ensure precise sensor sampling, while the fully programmable CANbus system allows for in-depth engine data analysis. This cutting-edge technology incorporates a variety of factors into the performance mapping, including pedal input, throttle position, gear, engine speed, air/fuel ratio, and more. Additional features include:
  • At-home upgradable firmware for continuous performance improvement
  • Data logging capability for detailed performance analysis

Unmatched Performance and Versatility

The JB4 Tuner Gen3B is the perfect solution for Audi enthusiasts seeking to unlock the full potential of their vehicles. With its discrete installation and quick removal, it maintains a clean engine bay while offering unparalleled performance gains. The JB4 is compatible with all driving modes and features a default map that runs 3psi over stock peak, with additional tuned maps available for stock and valet modes. Benefits include:
  • Enhanced power and torque for a more dynamic driving experience
  • Improved fuel economy during normal driving
With its Made in the USA quality and 5-year warranty, the JB4 Tuner Gen3B is a reliable and cost-effective choice for Audi owners looking to boost their vehicle's performance.

What Our Customers Say

February 6, 2026

Absolutely no complaints!

This is a quality piece of gear.

- Kade T..

February 6, 2026

Absolutely no complaints!

Performs beyond expectations.

- Hunter S..

February 6, 2026

Absolutely no complaints!

A solid performer. Very satisfied.

- Adrien R..

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