SKU: 4750592742

JB4 Tuner for 2023+ Mercedes C43, GLC 63, C63S AMG 2.0T Hybrid - Burger Tuning

Sale price$272.68 Regular price$302.98
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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30

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Description

JB4 Tuner for 2023+ Mercedes C43, GLC 63, C63S AMG 2.0T Hybrid - Burger TuningPower gains up to 100whp on pump gas Now includes the JB4PRO adapter and free app built in! This quick install plug and play tuner connects to two easy to reach plugs on top of the C43 GLC C63S AMG 2. 0L Turbo engine and safely increases turbocharger output by 3 6psi producing significant power and torque increases. Timing and fueling are appropriately rescaled for the increased boost and the installation is completely reversible in seconds. The JB4

Power gains up to 100whp on pump gas

Now includes the JB4PRO adapter and free app built in! This quick install plug and play tuner connects to two easy to reach plugs on top of the C43/GLC/C63S AMG 2.0L Turbo engine and safely increases turbocharger output by 3-6psi producing significant power and torque increases. Timing and fueling are appropriately rescaled for the increased boost and the installation is completely reversible in seconds. The JB4 is the only tuning system that includes CANbus providing dramatically improved performance and smoothness over other 2-channel tuning systems.

Wirelessly Connect to your JB4: Grab our all-new JB4 PRO smartphone connection to wirelessly connect the JB4 BMW 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 info on how to use the JB4PRO free app click here.

JB4 FEATURES & BENEFITS

• Power gains range from 30-65whp on pump gas
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom JB4 Mercedes tuning software and up to 8 maps for various fuel and modification levels
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes
• View and record up to 40 different gauges/engine parameters in real-time with the JB4 app.
• Boost by gear in 1st, 2nd, and 3rd can be controlled via the JB4 app for a perfect launch
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
• 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
• 91 octane fuel or better required for performance gains
• Not VIN locked and can be removed without a trace and resold down the road
• Includes the rugged JB4 billet aluminum enclosure for protection
• Made in the USA
• 5-year warranty

Vehicle Fitment

Mercedes-Benz
• 2023+ Mercedes-Benz C43 AMG 2.0L Turbo Mild Hybrid (M139)
• 2023+ Mercedes-Benz GLC 63 AMG 2.0L Turbo Plug-In Hybrid (M139)
• 2024+ Mercedes-Benz C63S E Performance AMG 2.0L Turbo Plug-In Hybrid (M139)

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.


DYNO RESULTS
2023 Mercedes-Benz C43 AMG - JB4 Maps 1, 2, and 4, 93 octane

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: 4750592742

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Robin Q
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Easy to put together. A drill with the hex head made it easier. I see some of the photos in the reviews and it looks like the fabric is wrinkled and loose. However, when we put it together, the fabric was tight and it looked polished. Using this divider to separate a recording space from the rest of the room the overall look is nice. I would not use this in a living room, but it’s fine in another room. Once put together, it is pretty sturdy. The pieces that connect the panels together are plastic. We did fold it one time when we moved it and didn’t have any issues, but it is going to remain stationary so I can’t comment on folding it more than the one time. It is very lightweight and very opaque.
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Reviewed in the United States on January 25, 2026
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Shane O'Daniel
Carnegie, US
★★★★★ 1
JUNK!
Color: Grey
This is the worst product in every way. I ordered a similar one previously and thought I was getting the same product which was great, no this is a piece of junk. I would have gladly sent it back but I needed it. I feel sorry for anyone who tries to put this together without any mechanical ability. I have plenty and it was still a nightmare. We will surely not be purchasing anything from this company in the future. The previous one I bought was a (Kecreque Room Divider). Is is a quality product!
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Reviewed in the United States on March 19, 2026
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Foxcat
Carnegie, US
★★★★★ 5
Nice looking and lightweight
I bought this to put in front of my basement doorway where I am missing a door. I don't like my cats in the basement and this works very well. However, because of the panels being up on 2 inch or so tiny stilts, my cats can still get through. So I have it upside down and will be putting gliders on the "bottom" of each panel. Note that it did come with gliders on the little stilts.
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Reviewed in the United States on January 23, 2023
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Karl S.
Dallas, US
★★★★★ 5
Easy privacy
Color: Grey
Great divider for a great price! Creates perfect portable privacy for the bed in our den.
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