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Burger Motorsports JB4 Tuner BMW B38 | B46 | B48 | B58 2014+

Burger Motorsports JB4 Tuner BMW B38 | B46 | B48 | B58 2014+

Regular price $529.00 USD
Regular price Sale price $529.00 USD
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The JB4 is the most advanced and highly featured tuning system available for your B58 and B48 vehicle. Power gains are up to 80hp to the wheels (100hp crank) on a completely stock car on pump gas for a B58, and up to 40hp to the wheels (55hp crank) for a B48, gains with bolt-on parts, higher octane, E85 mixtures, and larger turbos 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 in-dash map switching between factory and various performance maps, optional in-dash gauge displays for boost, boost limiting by gear for improved traction in lower gears, progressive water/methanol support, built-in data logging, built-in code reading, optional direct EWG control to prevent throttle closure with exhaust modifications, exhaust flapper control, and much more. Other more expensive tuners may claim to equal the JB4's technology but upon closer examination lack most if not all of the JB4's features.

Remember the JB4 does not require any additional modifications or previous stages. Simply install the JB4 as your first and only modification and enjoy an entirely new fast and smooth racing experience. The JB4 also does not require any user setup or customization, but for those who are interested in logging, adding new features as we post them, etc, we suggest the BMS DATA cable or REV3 mobile phone adapter. The JB4 automatically detects between the B46, B48, and B58 models at boot up making installation and setup a snap.


  • Power gains of up to 100hp to the wheels on a stock vehicle
  • Improves 0-60 times and 1/4 mile times
  • Preloaded with custom JB4 BMW 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
  • Exhaust flap operation can be controlled in most JB4 applications
  • 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
  • Free USA Shipping
  • 5-year warranty


  • BMW 1 Series
    • 2021+ F40 B48 128ti
    • 2019+ F40 B48 M135i
    • 2019+ F40 B38 M118i
    • 2015+ F20 F21 B58 M140i
    • 2016+ F20 F21 B48 120i, 125i
    • 2015+ F20 F21 B38 116i
    • 2015+ F20 F21 B38 118i
  • BMW 2 Series
    • 2022+ G42 B58 M240i xDrive
    • 2022+ G42 B48 220i 230i
    • 2016-2021 F22 F23 B58 M240i/iX
    • 2017-2021 F22 F23 B48 230i/iX
    • 2017-2021 F22 F23 B48 225i/iX
    • 2017-2021 F22 F23 B46 220i/iX
    • 2015-2021 F22 F23 B38 218i
    • 2015-2021 F45 F46 B38 216i Active tourer and GT
    • 2014+ F45 F46 B38 218i, 220i Active tourer and GT
    • 2019+ F44 B48 M235i/iX Gran Coupe
  • BMW 3 Series
    • 2020+ G20 G21 B58 M340i/M340iX
    • 2019+ G20 G21 B46 B48 318i/320i/320Li/320e/330i/330iX/330e/320Li
    • 2016-2019 F30 F31 F34 B58 340i/340iX
    • 2016-2018 F30 F31 F34 B48 330i/330iX/330e
    • 2016-2018 F30 F31 B48 325i/325iX
    • 2016-2018 F30 F31 B46 320i/320iX
    • 2016-2018 F30 F31 B46 318i/318iX
  • BMW 4 Series
    • 2021+ G22 G23 G26 B58 M440i/M440iX/Gran Coupe
    • 2021+ G22 G23 G26 B48 420i/430i/430iX/Gran Coupe
    • 2016-2020 F32 F33 F36 B58 440i/440iX/Gran Coupe
    • 2016-2020 F32 F33 F36 B48 430i/430iX/Gran Coupe
    • 2016-2020 F32 F33 F36 B48 425i/425iX
    • 2016-2020 F32 F33 F36 B46 420i/420iX
    • 2016-2020 F32 F33 F36 B38 418i
  • BMW 5 Series
    • 2017+ G30 G32 B58 540i/540iX
    • 2017+ G30 G32 B46 B48 530i/530iX/530e
    • 2021+ G30 545e
  • BMW 6 Series
    • 2018+ G32 G33 B48/B58 630i/640i/640iX
  • BMW 7 Series
    • 2016+ G11/G12 B58 740i/740iX
    • 2016+ G11/G12 730i/730iX
  • BMW 8 Series
    • 2019+ G14 G15 G16 B58 840i/840iX/Gran Coupe
  • BMW X Series
    • 2016+ B46/B48 X1
    • 2018+ B46/B48 X2
    • 2018+ G01 B48/B58 X3 2.0i/3.0i/M40i including xDrive and sDrive
    • 2019+ G02 B48/B58 X4 2.0i/3.0i/M40i including xDrive and sDrive
    • 2019+ G05 B58 X5 40i/40iX
    • 2021+ G05 X5 45e
    • 2019+ G06 B58 X6 40iX
    • 2019+ G07 B58 X7 40i
  • BMW Z4
    • 2019+ BMW G29 B58 Z4 M40i
    • 2019+ BMW G29 B46/B48 Z4 30i and Z4 20i
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