SKU: 66823435455

JB4 Tuner for 2017+ Audi S4, S5, SQ5, RS4, RS5, A6, A7, Q7, Q8 (3.0T Only) - Burger Tuning

Sale price$260.55 Regular price$289.50
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  • CAN

Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

JB4 Tuner for 2017+ Audi S4, S5, SQ5, RS4, RS5, A6, A7, Q7, Q8 (3.0T Only) - Burger TuningThe JB4 is an easy to install plug and play tuner that attaches to sensors in the engine bay and works with your factory ECU tuning to remap boost, timing, and fueling for optimal performance and reduced turbo lag. Includes full SENT sensor technology required for properly tuning the latest Audi platforms. Includes full CANbus allowing the JB4 to access and incorporate all engine data in it's tuning strategies, incorporate unique safety features such

The JB4 is an easy to install plug and play tuner that attaches to sensors in the engine bay and works with your factory ECU tuning to remap boost, timing, and fueling for optimal performance and reduced turbo lag. Includes full SENT sensor technology required for properly tuning the latest Audi platforms. Includes full CANbus allowing the JB4 to access and incorporate all engine data in it's tuning strategies, incorporate unique safety features such as keeping boost pressure low until oil and water is up to temperature to provide proper engine and turbo lubrication and drop to a low boost map if the engine starts to overheat, run lean, excessively knock, or over boost. Includes fuel control for ethanol mixture mapping. Fully compatible with FREE JB4PRO app for on the fly map changes, data logging, firmware updates, and much more. 

Revision 2 now includes an integrated boost control connection which can be optionally connected for higher power applications. You no longer need to purchase a separate BCM module for this!


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.

For map details, updates, and to join the discussion: Click Here 


AUDI 3.0T JB4 Tuner 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

Purchase Links For Older Models

Audi

  • 2017+ Audi B9/9.5 S4 3.0TFSI
  • 2017+ Audi B9/9.5 S5 3.0TFSI
  • 2017+ Audi B9/9.5 MK2 SQ5 3.0TFSI
  • 2017+ Audi B9/9.5 RS4
  • 2017+ Audi B9/9.5 RS5
  • 2018+ Audi C8 A6/7 3.0TFSI/55
  • 2017+ Audi Q7 3.0TFSI/55
  • 2017+ Audi Q8 3.0TFSI/55

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 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.

 


Dragy testing on a 100% factory S4 with JB4 and 30% E85 fuel.




Customer dragy testing with JB4, 93 octane, and a few bolt-on mods


VIDEO


Customer provided Audi B9 S4 race video showing JB4 in action



  

 

 


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: 66823435455

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MrzCastro
Massapequa, US
★★★★★ 3
Nice but thin
Color: Black, Size: X-Large
It is a very nice shirt. But it is very thin. It’s not something that is going to keep you warm. It is more for being outside when it’s hot. That’s how I look at it or maybe a shirt you can take on vacation. The material I don’t know if it will do well after a couple of watches so if you do purchase this shirt, I highly recommend to hang riot. It will literally dry in like 30 minutes that south than it is.
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Reviewed in the United States on May 4, 2026
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Linda Aponte
Birmingham, US
★★★★★ 5
Nice shiirt
Color: Light Blue, Size: XX-Large
Stunning
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Reviewed in the United States on April 17, 2026
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K Flores
Draper, US
★★★★★ 4
Nice beach shirt for senior portraits
Color: Light Green, Size: X-Large
I wanted some beachy vibe pictures for my son's senior portraits. He's taken up surfing lately, so I wanted to get a few shots of him at the beach, but I wanted his outfit to work with the scenery. I saw this shirt and I thought he would look good in it. This shirt is really nice on him. It fits his big shoulders well and accentuates his V shape. It's not too form fitting, but definitely doesn't look frumpy. It's soft and light and the sage green looks so good against his golden olive skin. The only qualm I have with it is how much it wrinkles. I know it's a linen blend and they always wrinkle, but I had to make sure he changed at the beach as not to go out with a ton of wrinkles. It's a material problem, not specific to this shirt...but annoying. The shirt launders really well with only a little shrinkage...it made it fit better on him in my opinion. Just make sure to take it out of the dryer promptly and hang it up.
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Reviewed in the United States on March 16, 2026
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patricia normand
Port Orchard, US
★★★★★ 5
untuck it shirt!
Color: Beige, Size: X-Large
lovely shirt! fits well
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Reviewed in the United States on May 31, 2026
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Jeff Tyler
Fort Morgan, US
★★★★★ 5
LOVE these shirts, came back and bought more!
These shirts look SO good. I am a senior manager in a large corporation so have to dress nice every day. I loved the first one of these shirts so much I came back and have now bought 15 of them in different colors. Basically, these are now all I wear. Buy yourself 15 bamboo undershirts with the V neck (you don't want the layered look with dress shirts, you want the V neck so you can't see the undershirt), half in white and half in black to wear under these and you are set. GUYS.....WHEN YOU FIRST BUY THESE YOU MUST IRON THEM. I see the pics of people wearing them here, and you can still see the fold lines from being packaged and that looks terrible. Washing alone won't get rid of the fold lines. Get your iron and set it for POLYESTER which is a lower heat setting. If you set it hot, it will melt the shirt. But set it for polyester and the lines iron out VERY easily and fast. You only have to do this when you first buy them. I've never had to iron any of them again after the first time. They are very wrinkle resistant! I HATE my cotton dress shirts now. These Coofandy shirts STRETCH like crazy! You can bend and reach for things no problem. I'm able to wear all of these with Chinos, dress slacks AND jeans so they are incredibly versitile! My wife and my girlfriend both (joking!) love how soft the shirt feels on me. I have to wear these shirts every day and own enough so I can do laundry once every other week and so far all the shirts have been very durable with no tears, rips, any problems at all. They all still look new.
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Reviewed in the United States on March 27, 2026

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