SKU: 47166330697

Group 15: JB4 for Audi EA825 4.0TT C8 RS6/7, RS Q8, SQ7/8

Sale price$406.80 Regular price$452.00
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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

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Description

Group 15: JB4 for Audi EA825 4.0TT C8 RS6/7, RS Q8, SQ7/8Power gains from 70hp and 100tq to the wheels on a stock vehicle without the risks of flashing! Power gains of up to 120whp and 160wtq bring the car to life allowing 1 4 mile potential deep into the 10s. Unlike other generic tuning devices, the JB4 includes full CANbus integration via the OBDII port for advanced tuning, safety features, and diagnostics, as well as electronic wastegate control for superior boost targeting. This is simply the best

Power gains from 70hp and 100tq to the wheels on a stock vehicle without the risks of flashing!

Power gains of up to 120whp and 160wtq bring the car to life allowing 1/4 mile potential deep into the 10s. Unlike other generic tuning devices, the JB4 includes full CANbus integration via the OBDII port for advanced tuning, safety features, and diagnostics, as well as electronic wastegate control for superior boost targeting. This is simply the best tuning box available for your Audi.

Installation is fully reversible attaching to the TMAP sensors and OBDII port. Firmware updates loaded via JB4 Mobile or a BMS Data Cable will be provided free of charge as we expand the JB4's performance, maps, and features with future development.

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. Separate JB4 Mobile app purchase also required.





JB4 Features & Benefits

• Power gains of up to 120hp and 130tq to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom Audi 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
• Includes the rugged JB4 billet aluminum enclosure for protection
• 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
  

Applications
• Audi C8 RS6
• Audi C8 RS7
• Audi SQ7
• Audi SQ8
• Audi RS Q8
• Audi S8

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.

RS6/7

SQ7/SQ8/RS Q8/S8

JB4 Dyno Video and results



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: 47166330697

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4.2 ★★★★★
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DarkWing
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★★★★★ 5
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Reviewed in the United States on January 26, 2026
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Bob T.
Belleville, US
★★★★★ 5
Quality product, the double netting is great compared to single
Size: Doube Layer
It is a double net. It holds items down and is really stretchy which is great. Feels strong and has multiple carabiners/loops to tie down whatever you are hauling.
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Reviewed in the United States on March 26, 2024
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Curtis Conley
Charlottesville, US
★★★★★ 5
Works great
Size: Doube Layer
Works great, love it.
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Reviewed in the United States on October 4, 2025
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Nina
Carnegie, US
★★★★★ 5
Compact, stretches over loads, wish it had a bag.
Size: Doube Layer
I am giving the double layer netted version of this product, for my uses, a 5 star, though there are two negatives to consider up front. 1. There is no storage bag included. 2. And the 6 caribeaners included are too cheezie to trust. Yes, the caribeaners will hold the net, and I assume your heavy loads will be strapped down before netting it. So I did install them in the straps just because. Bur I'll be putting the thick straps around the edge over bed hooks. I can't speak on how the single layer net would work, but you really will think after getting the double layer, that was the right choice. The mesh is tightly made and should hold even the messiness bag of trash in your truck bed from blowing out if you get the double layer. When you stretch the net out, it does act like a membrane, so you need several hooks around your bed or trailer. It stretched tightly around 5.5 x 7.5 1975 Datson pickup bed trailer. As you remember these beds have hooks all the way around and a curled lip surrounding the top. So this is perfect for full edge coverage. But if you have few hooks, the net will pull inward between the points lile a membrane would. If you need a stiff heavy duty throw over style net, this is not it. After hooked down, there is a great amount of stretch to cover good sized loads. This net is also excellent for containing a tarp covered load, keeping the tarp from coming loose and flapping around in the wind which is always a challenge on long trips. Also it will help contain brush and trash so that ENCON won't ticket you for uncovered loads. Light weight, easy to use, and it should hold up well for the price. Use one of those left over Ryobe tool bags you have laying around, and some better dollar-store caribeaners, and you'll be ser!
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Reviewed in the United States on August 18, 2023
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Johnny Bailey
Boise, US
★★★★★ 5
Fit great
Size: Doube Layer
I love my truck bed net. It has been very useful in keeping my items secure in the bed of my truck.
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