JB4 Tuner for 2021+ Audi B9.5 A4, A5, Q5 & C8 A6, A7 (2.0T Only) - Burger Tuning
SKU: 8881865179

JB4 Tuner for 2021+ Audi B9.5 A4, A5, Q5 & C8 A6, A7 (2.0T Only) - Burger Tuning

Sale price$269.55 Regular price$299.50
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

JB4 Tuner for 2021+ Audi B9.5 A4, A5, Q5 & C8 A6, A7 (2.0T Only) - Burger TuningUp to 75bhp and 90ft lb Gain JB4 Tuner for Audi EA888 Gen4 2. 0 TFSI 261hp & 265hp (Group 16) The JB4 is a true user adjustable plug and play performance tuner for all EA888 Gen4 based models in the Audi Group range with electric assist. Now includes the JB4PRO adapter and free app built in! The JB4 features CANbus connectivity for more advanced tuning, direct AFR control, advanced safety systems for boost, air fuel ratio, fuel trims, and engine

Up to 75bhp and 90ft-lb Gain

JB4 Tuner for Audi EA888 Gen4 2.0 TFSI 261hp & 265hp (Group 16)

The JB4 is a true user adjustable plug and play performance tuner for all EA888 Gen4 based models in the Audi Group range with electric assist. Now includes the JB4PRO adapter and free app built in!

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 is a true user adjustable plug and play performance tuner for all 261hp 4 cylinders from the VAG group. Power Gains: Starting at 50bhp and 70ft-lb with 91 octane/95Ron with + 4.0psi boost over stock on the default setting with no further mapping. Up to 75bhp and 90ft-lb with bolt-on modifications, higher octane, and boost adjustment with the optional wireless JB4PRO Bluetooth adapter.  

For sharpe throttle response and extra ordinary performance buy tuner with intake
 

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

• 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

• 2021+ Audi B9.5 A4/5 40TFSI
• 2021+ Audi B9.5 Q5 40TFSI
• 2021+ Audi B9.5 A4/5 45TFSI
• 2021+ Audi B9.5 Q5 45TFSI
• 2021+ Audi C8 A6 261hp
• 2021+ Audi C8 A7 261hp

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 the 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 and is sold in over 67 countries worldwide.

Is the JB4 a real tune?

Yes the JB4 is a real tune. By tapping into specific sensors and CANbus for real time vehicle data the JB4 is able to alter your boost, timing, AFR, and/or fuel trims, to a similar degree an ECU reflash would, but without the vehicle ever knowing its been tuned. The result is safe, smooth, and significant power and torque gains while retaining your factory safety systems and without having to unlock/flag your ECU.




DYNO

 




DYNO VIDEO

Audi JB4 Mobile demo video

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 8881865179

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.0 ★★★★★
Based on 311 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
E
Verified Purchase
Eunice M.
Chelsea, US
★★★★★ 5
Eczema approved
I have always wanted a face mist to cool down my eczema rashes and this spray seem help a lot specifically if you put it in the refrigerator. I did notice it left my skin with moisture. Plus there is no fragrance.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
D
Verified Purchase
D Day
Natrona Heights, US
★★★★★ 5
Natural remedies are the best!
Excellent for eczema and ease of application. Instant relief and wonderful results! I found it worked better than prescription medication.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
S
Verified Purchase
sm
Fort Morgan, US
★★★★★ 5
Best for itch relief.
My wife experiences eczema itching on her feet. She claims this is the ultimate product to sooth the irritation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 27, 2025
V
Verified Purchase
VAnnie Turner
New York, US
★★★★★ 5
Wonderful
Keep it the icebox and spray on ! Feels FAB
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 12, 2025
R
Verified Purchase
Ripon Princess
Omaha, US
★★★★★ 4
It definitely calms eczema.
I love this stuff. However, my bottle came with no sprayer top. I asked Amazon to send me a top, and they would not unless I returned the whole bottle. I didn't want to have to go through the hassle so I just bastardized another bottle with the same kind of sprayer, washed it, and used it on this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 25, 2025

recommand products