BMS B38 / B46 / B48 / B58 Tuner JB4 Performance Tuner | BMW 1, 2, 3, 4, 5, & X Series
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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 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.
*NOT LEGAL FOR USE ON ANY POLLUTION CONTROLLED MOTOR VEHICLES IN CALIFORNIA OR STATES ADOPTING CALIFORNIA EMISSION PROCEDURES.*
BMW 1 Series
- All M140
BMW 2 Series
- 2017+ F22 F23 B58 240i/iX
- 2017+ F22 F23 B48 230i/iX
- 2017+ F22 F23 B46 220i/iX
BMW 3 Series
- 2016+ F30 B58 340i/340iX
- 2016+ F30 B48 330i/330iX
- 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 B46 420i/420iX
BMW 5 Series
- 2017+ G30 B58 540i/540iX
BMW X Series
- 2016+ B46/B48 X1
(approx) 20 Minutes
Simple installation for anyone
JB4 F Series M...
JB4 B48/B58 CA...
JB4 Add-On Blu...Note boost on fuel gauge is also enabled on this run. Result w...