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BMS BMW B58 B38 B46 B48 JB4 Tuning Box (M140i, 220i, M240i, 330e, 320i, 340i & 440i)

BMS

  • £450.00
    exc. VAT £375.00
    £375.00
  • 8


Ready to take your BMW B46/B48/B58 turbo to the next level?

 

You may also wish to add the Data Cable or the Bluetooth Connect Kit for additional features.

 

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 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.

Note for 2018+ G chassis vehicles with the digital dash layout we have not yet added in the JB4 commands to allow in-dash control but will provide those via a free firmware update once developed. Until then a JB4 mobile adapter or BMS data cable is required for any map and setting changes.

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.

Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android device via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable. Both options allow 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. Separate JB4 Mobile app purchase also required.

 

Features

• Power gains of up to 50hp to the wheels on a stock vehicle
• Quick Plug & Play Installation
• CANbus integration offering unrivaled tuning features and performance 
• Runs as smoothly as stock, this is how your BMW should have come from the factory 
• Compatible with all driving modes 
• Fuel economy unchanged during normal driving
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment 
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes 
• Not VIN locked, can be removed without a trace and resold down the road 
• Made in the USA 
• Free USA Shipping
• 5 year warranty


Map Guide as of v11 firmware:

Map0: Stock tuning, fully disable JB4
Map1: Additive map with peak of 3psi over stock added (91 octane)
Map2: Additive map with peak of 4psi over stock added (91-93 octane)
Map3: Additive map with peak of 6psi over stock added (93+ octane)
Map4: VALET / Low Boost Map
Map5: Additive map with peak of 6psi over stock added & more aggressive timing profile for higher octane fuel (experimental, 93+ octane, bolt on modifications)
Map6: Custom tuning map allowing both additive (below 10psi) and absolute (above 10psi) targeting
Map7: WMI map (boost varies based on WMI additive and map settings)


Map Guide as of v13+ firmware:

Map0: Stock tuning, fully disable JB4
Map1: Additive map with peak of 3psi over stock added (91 octane)
Map2: Additive map with peak of 4psi over stock added (91-93 octane)
Map3: Additive map with peak of 6psi over stock added (93+ octane)
Map4: Additive map with peak of 6.5psi over stock added (93+ octane)
Map5: Additive map with peak of 6psi over stock added & more aggressive timing profile for higher octane fuel (experimental, 93+ octane, bolt on modifications)
Map6: Custom tuning map allowing both additive (below 10psi) and absolute (above 10psi) targeting
Map7: WMI map (boost varies based on WMI additive and map settings)
Map8: VALET / Low Boost Map

 

Map Guide last updated on 23.01.2020 by Marshall L.

 

In the box: 

F Chassis B46/B48/B58 JB4

Extended OBDII Cable for RHD cars, also fits LHD

 

Compatibility Check

To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your registration number(UK) or the last 7 digits of your VIN. Simply enter your car details prior to checkout. 

 

Compatibility

BMW 1 Series
• 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
• 2017+ F22 F23 B58 M240i/iX
• 2017+ F22 F23 B48 230i/iX
• 2017+ F22 F23 B48 225i/iX 
• 2017+ F22 F23 B46 220i/iX
• 2015+ F45/F46 B38 216i AT/GT
• 2015+ F22/F23 B38 218i
• 2014+ F45/F46 B38 218i AT/GT

BMW 3 Series
• 2020+ G20 B58 M340i/M340iX
• 2020+ G20 B48 330i/330iX
• 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
• 2016+ F32 F33 F36 B38 418i

BMW 5 Series
• 2017+ G30 B58 540i/540iX
• 2017+ G30 B46/B48 530i/530iX/530e

BMW 6 Series
• 2017+ G32 B58 640i/640iX

BMW 7 Series
2016+ G11/G12 B58 740i/
740iX
2016+ G11/G12 730i/730iX

BMW 8 Series
2020+ G15/G14 B58 840i/8
40iX

BMW X Series
• 2018+ G01 B48/B58 X3 2.0i/3.0i/M40i
• 2019+ G02 B48/B58 X4 2.0i/3.0i/M40i
• 2019+ G05 B58 X5 40i
• 2019+ G07 B58 X7 40i

BMW Z4
• 2019+ BMW G29 B58 Z4 M40i
• 2019+ BMW G29 B46/B48 Z4 30i and Z4 20i

 

Will work on most BMW with the B48 and B58 engine even if it is not on the above list, if you are unsure, please drop us an email and we would be delighted to double check for you! 

 

Free Next Day UK Delivery

Free next day delivery if ordered before 11am! We can also ship worldwide, simply enter your full address during checkout for a shipping quote.

 

Warranty

5 Year BMS Repair Warranty

 

Manufactured by

Burger Motorsports

 

Part Number

F-B46B48B58-JB4

 

BMS BMW F Chassis B46/B48/B58 JB4 (M140i, 220i, M240i, 320i, 330i, 340i, 420i, 440i & X1 ) Installation Guide - ML Performance UK

 

JB4 Tuned M140i

 

How to install B58 JB4 + Bluetooth Kit on RHD UK/Australia M140i

 

How to install (US - LHD)

 

For install guide, map guide, and the latest firmware click here.

  

JB4 Dyno results (Click to enlarge)

2016 BMW 340i B58, JB4, 93 Octane, Map3

BMS BMW F Chassis B46/B48/B58 JB4 (220i, 240i, 320i, 330i, 340i, 420i, 440i & X1 ) Dyno - ML Performance UK

 

2017 BMW 230i with B48 Engine, JB4

BMS BMW B58 B38 B46 B48 JB4 Tuning Box (M140i, M240i, 320i & 440i) - 2017 BMW 230i with B48 Engine, JB4

 

2016 BMW 340i B58, JB4, Pure Stage1 Turbo, 93 Octane, WMI

BMS BMW B58 B38 B46 B48 JB4 Tuning Box (M140i, M240i, 320i & 440i) - 2016 BMW 340i B58, JB4, Pure Stage1 Turbo, 93 Octane, WMI

 

BMS BMW B58 B38 B46 B48 JB4 Tuning Box (M140i, M240i, 320i & 440i)

BMS BMW B58 B38 B46 B48 JB4 Tuning Box (M140i, M240i, 320i & 440i) - 2016 BMW 340i B58, JB4, 93 Octane, WMI

 JB4 B48/B58 CANFlap Exhaust Flapper Test

 

JB4 F Series OBDII CANbus Wheel Control DEMO

 

JB4 Add-On Blue Tooth Phone Logging DEMO with a new 2016 BMW M4 ZCP!

 

Dimensions

26 x 16 x 6 cm

 

Weight

876g


Customer Reviews

5 Based on 8 Reviews
5 ★
100% 
8
4 ★
0% 
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3 ★
0% 
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2 ★
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ZK
03/14/2019
zahid k.
United Kingdom

Worth every penny!

Fantastic product, although there was mix up with the delivery (since sorted promptly). Gains of 40bhp over stock! Really helps unlock the potential of the B58.

AB
02/20/2019
Andy Bradley

Excellent Service

Ordered a JB4 and the Bluetooth adaptor yesterday and had it delivered today. Excellent communication and excellent service. The hand written note that came with my order was a great touch and shows why you should use ML Performance. Now to have the parts fitted.......

DD
02/14/2019
David D.
United Kingdom

Jb4 Bmw 330e

Great seller fast shipping and very communicative with top service orientation D

PA
11/12/2018
Paul A.
United Kingdom

BMW 340i JB4

I bought the JB4 along with the Bluetooth connect kit and the app download. Installation on the car itself was straight forward and didn't take very long at all. I updated the firmware directly through the app and changed a few of the settings etc before going out for a drive. I've already got a few other mods on my car and a full tank of V-Power so set the JB4 to map 3 and the difference is amazing. Much more power and torque is instantly noticeable. I've been running it now for a couple of weeks with no problems at all. Overall this is highly recommended. The service from ML Performance is also top notch as usual.

AV
07/03/2018
Ari Van Essen

Take your 440I Gran Coupé to the next level!

Verry happy with the performance. Installation was easy results are great! Must have for the BMW 440i Xdrive :-)