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B38/B46/B48/B58 JB4
b48 b46 b38

Applications:

BMW 1 Series
• 2015+ B58 M140

BMW 2 Series
• 2017+ F22 F23 B58 240i/iX
• 2017+ F22 F23 B48 230i/iX
• 2017+ F22 F23 B48 225i/iX
• 2017+ F22 F23 B46 220i/iX

BMW 3 Series
• 2016+ F30 B58 340i/340iX
• 2016+ F30 B48 330i/330iX/330e
• 2016+ F30 B48 325i/325iX
• 2016+ F30 B46 320i/320iX
• 2016+ F30 B46 318i/318iX

BMW 4 Series
• 2016+ F32 F33 F36 B58 440i/440iX
• 2016+ F32 F33 F36 B48 430i/430iX
• 2016+ F32 F33 F36 B48 425i/425iX
• 2016+ F32 F33 F36 B46 420i/420iX

BMW 5 Series
• 2017+ G30 B58 540i/540iX

BMW X Series
• 2016+ B46/B48 X1

Ready to take it to the next level?
The JB4 is the most advanced and highly featured tuning system available for your B58 and B48 vehicle. Power gains are up to 60hp to
the wheels (80hp 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, and larger turbos are even higher.

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, 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.

JB4_B58 is CARB Approved Under Executive Order (EO) No.D-744-4 for all 2016-2018 BMW 230i, 330i, 430i, 530i, 340i, 440i, 740i, M240i, and X1 applications.
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OBDII M4 M3 Tuner

2017 BMW 230i with B48 Engine, JB4 2016 BMW 340i B58, JB4, 93 Octane, Map3
   
2016 BMW 340i B58, JB4, Pure Stage1 Turbo, 93 Octane, WMI 2016 BMW 340i B58, JB4, 93 Octane, WMI
   
B38/B46/B48/B58 JB4

$529.00 + Free Shipping in USA

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Optional BMS Data Cable for diagnostics and updates
This proprietary DATA cable connects the JB control box to your laptop for use with our new datalogging, tuning, and map loading software. More info here.

$35.00

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Optional JB4 Smart Phone Wireless REV3 for diagnostics and updates
The JB4 Connect Kit (Rev 3) allows your Bluetooth 4.0 compatible iOS and Android devices to connect wirelessly to your JB4 with optional software. More info here.

$140.00

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Widen Your Stance B46 B48 B58 Intake BMW/MINI Floor Jack Pad Add even more power! B58 Engine Methanol Spacer B58 BMW Engine Spark Plug tool
BMW Wheel Spacers bmw 340i 340ix intake BMW Jack Pad Adapter bmw methanol water injection bmw methanol water injection BMW Jack Pad Adapter
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