SKU: 66478015427

JB4 Tuner for 2022+ Subaru WRX 2.4L & 2019+ Ascent, Legacy, & Outback 2.4L - Burger Tuning

Sale price$269.55 Regular price$299.50
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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Description

JB4 Tuner for 2022+ Subaru WRX 2.4L & 2019+ Ascent, Legacy, & Outback 2.4L - Burger TuningPower gains of up to 50hp to the wheels on a stock vehicle The JB4 is the most advanced and highly featured tuning system for your Subaru 2. 4L 4 cylinder turbo. Power gains are up to 50hp to the wheels (70hp crank) on a completely stock car on pump gas, and gains with ethanol mixtures and bolt on parts are even higher. The JB4 features a simple plug & play installation harness for easy installation & removal and includes many features not found with

Power gains of up to 50hp to the wheels on a stock vehicle

The JB4 is the most advanced and highly featured tuning system for your Subaru 2.4L 4 cylinder turbo. Power gains are up to 50hp to the wheels (70hp crank) on a completely stock car on pump gas, and gains with ethanol mixtures and bolt-on parts are even higher.

The JB4 features a simple plug & play installation harness for easy installation & removal and includes many features not found with any other tune. Including on the fly map switching from your phone/tablet instead 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. 
 

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

• Power gains of up to 50hp to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom JB4 Subaru 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 30 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

• 2022+ Subaru WRX 2.4L 4 cyl. Turbo
• 2019Subaru Ascent 2.4L 4 cyl. Turbo
• 2020Subaru Legacy XT 2.4L 4 cyl. Turbo
• 2020Subaru Outback XT 2.4L 4 cyl. Turbo

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.

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

 

 

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: 66478015427

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★★★★★ 5
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Reviewed in the United States on May 20, 2026
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Partycrtns
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★★★★★ 5
Good size for a serving bowl.
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Nice large bowl. Can be used as a serving bowl. Nice design and sturdy. I have subscribed to receive a pack once a month.
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Reviewed in the United States on May 26, 2026
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Eric Marquardt
Port Orchard, US
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Big, and really sturdy. I can put any food in this and trust it will uphold.
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Whiting, US
★★★★★ 5
Strong, Spacious, and Perfect for Every Meal
Style: 34 Ounces, Size: 34 Count
I’ve been using the Dixie Ultra Extra Large Paper Bowls for a while now, and they really stand out. With a 34 oz capacity, these bowls are big enough to hold hearty meals like soups, stews, and even large salads without worrying about spills. They’re perfect for heavy meals or when you just want a generous portion. What I appreciate most is that they’re compostable, which makes me feel better about using disposable products without harming the environment. Plus, they’re microwave safe, so reheating leftovers is super easy and convenient. The bowls are sturdy and don’t get soggy or flimsy, even with hot or liquid foods, which is a huge plus. Whether you’re having a casual lunch, a family gathering, or need something reliable for everyday use, these bowls deliver both quality and convenience. They handle big meals with ease and clean-up is a breeze. Definitely a smart choice for anyone who wants disposable bowls that actually hold up!
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Boise, US
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This great stuff! use it on all body parts. It absorbs into the skin so well & is not greasy. Makes my skin feel soft & smooth. Smells good too. Helps heal damaged & dry skin, especially on heals & elbows. It is part of my regular skin care now. I am an avid user.
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