SKU: 5314444828

JB4 Tuner for 2018+ Jeep Wrangler & Cherokee 2.0L Turbo - Burger Tuning

Sale price$269.55 Regular price$299.50
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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

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Description

JB4 Tuner for 2018+ Jeep Wrangler & Cherokee 2.0L Turbo - Burger TuningPower gains of up to 40hp to the wheels on a stock Jeep! The JB4 is the most advanced and highly featured tuning system for your 2018+ Jeep Wrangler Cherokee 2. 0L 4 cylinder Turbo. Power gains are up to 40hp to the wheels (55hp crank) on a completely stock car on pump gas. Gains with bolt on parts, higher octane, and larger turbos are even higher. Now includes the JB4PRO adapter and free app built in! The JB4 features a simple plug and play

Power gains of up to 40hp to the wheels on a stock Jeep!

The JB4 is the most advanced and highly featured tuning system for your 2018+ Jeep Wrangler/ Cherokee 2.0L 4-cylinder Turbo. Power gains are up to 40hp to the wheels (55hp crank) on a completely stock car on pump gas. Gains with bolt-on parts, higher octane, and larger turbos are even higher. Now includes the JB4PRO adapter and free app built in!

The JB4 features a simple plug and play installation harness for easy installation & removal and includes many features not found with any other tune. Including on-the-fly in dash map switching between factory and various performance maps, boost limiting by gear for improved traction in lower gears, progressive water/methanol support, built-in data logging, built-in code reading, and much more.

The latest JB4 firmware, map guide, support, and discussion are here.

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 Performance Tuner Features & Benefits

• Power gains of up to 40hp to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom JB4 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 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

• 2018+ Jeep Wrangler 2.0L
• 2018+ Jeep Cherokee 2.0L

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.

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



Jeep 2L stock vs. JB4 map2 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:
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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: 5314444828

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4.2 ★★★★★
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Erin Magers
Lake Worth, US
★★★★★ 3
Decent but magnet isn’t strong enough
Style: 15W Charger
Unit appears well made and I feel like it minimizes any potential damage to the screen. For me, magnet just wasn’t strong enough and I wasn’t a fan of the cable - would be nice if product had clips for cable management or something to give it a cleaner install. If it wasn’t for the magnet issue, I probably would have kept. Returned.
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Reviewed in the United States on March 24, 2026
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Greg M.
Dallas, US
★★★★★ 5
Really a nice product!
Style: 15W Charger, Style: 15W Charger
I wanted a nice magsafe charge/holder for my phone and I tried this one and so far, it's great. Pros: - It has a really nice-looking LED behind the magsafe holder which glows nicely, as you see in the pic. - The plastic feels good, strong and (hopefully) not plastic that degrades and becomes brittle. - The rubber bumpers which hold it in place under the mount against your display seem well-placed. - It's fully adjustable between positions wherever you wish to mount it. - You can mount your phone either above or to the side of the display on any corner which provides nice flexibility. - I found it best on the upper right because on the left, the steering wheel obscures the phone and the two bottom corners aren't useful to me. - The little knobs work well to hold it in place and tighten nicely. Cons: - The only problem is how the design has the cable visible and sticking out when it could have easily been designed to integrate into the little arm so it's hidden. As it is, the ugly, out of place and avoidable USB-C cable is visible which I don't like. - You can rotate the holder to make the USB-C cable appear in front of the arm holder so it's less visible but it should have been avoided with a simple design modification and integrated USB cable for a more streamlined appearance. In any case, this is a nice addition to my Model 3 Performance to hold my phone while I drive, out of the way while still charging. Try one. M
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Reviewed in the United States on January 9, 2025
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Maria R
Charlottesville, US
★★★★★ 5
Amazing iphone mount for Model Y.
Color: Upgraded Version - Gray
I was pleasantly surprised at how this phone mount worked for my purpose. I am a care driver and drive a Tesla Model Y. This mount perfectly fit the screen and my iphone doesn't come off even when I hit a pothole. The best part of this mount is the price. One cannot find anything cheaper than this. As for the function, this mount really fits the bill. Thumbs up!
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Reviewed in the United States on February 9, 2026
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From a fan
Birmingham, US
★★★★★ 5
Easy to use and lightweight
Color: Upgraded Version - Gray
Easy to use and able to use it on table top or as a tall stand on the floor
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Reviewed in the United States on March 1, 2026
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My2cents
Alexandria, US
★★★★★ 3
Decent MagSafe phone mount
This was just an average MagSafe. Build quality is ok. The material, especially the plastic parts, feel cheap. The design is nothing to brag about. It can be mounted anywhere along the edge of the screen. Although it's marketed as for the Telsa Model 3/Y, It can be used with any cars with a tablet that fit's the dimension. I actually had problems installing it because I have a screen protector on and the added thickness resulting it the mount barely being able to squeeze it. Note the design prevents adjustments in certain mount positions as the end of the slider will run up against the lock nut. Magnetic strength is acceptable although I question the stability when the slider is at it's maximum extension with a phone mounted. Overall, it's perfectly functional but I would prefer something a bit more refined and minimalist.
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Reviewed in the United States on October 4, 2025

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