JB4 Mobile

JB4 Mobile is a mobile data logger/display for use with the JB4 tuner.
Dmac Mobile Developments, LLC

Download JB4 Mobile APK

Version A356
Rating 3.7
Category Tools
Package name com.dmacpro91.jb4_mobile
Downloads 100+

JB4 Mobile Description

JB4 Mobile is a mobile data logger and display for use with the JB4 tuner from Burger Motorsports.

To connect, simply attach the JB4 data cable to your device using an OTG cable.
***Use a good quality OTG cable to avoid connection issues.
***If you keep getting "Serial port not available" errors, 1 of these issues is probably the cause:
1) Your OTG cable is faulty
2) Your device either doesn't support OTG properly or requires a powered USB hub
3) You're using a Galaxy S6/S6 Edge (see below)

Galaxy S6/S6 Edge Owners using an OTG cable: It has come to my attention that to get these devices to work correctly, you must first connect the OTG cable to your device, THEN connect the JB4 cable, THEN open the app and connect. Not sure why these devices are so picky, but at least someone found a workaround.

JB4 Mobile allows you to monitor multiple parameters of your JB4 equipped car at once. Parameters such as boost psi, rpm, fuel trims, air/fuel ratios, ignition advance, fuel pressure and much more are all available.


Current Features:
Data Monitoring
Data logging (log files are fully compatible with JB4 Windows software)
Data Graphing
Email and rename saved logs
Read/Delete codes
View previously read codes
Modify boost/fuel mapping
Modify methanol settings
Switch maps on the fly
Auto WOT logging
GPS Speedometer
G Force Meter
JB4 Firmware Updating
Landscape Support

How to calibrate the G Force meter:
1) Make sure your device is mounted in your vehicle in a (mostly) upright position (portrait only support for now).
2) Select a G Force gauge on the display screen.
3) When the vehicle is at a complete stop on a flat surface, simply double tap on the G Force gauge.
4) When the dot is centered in the circle with the car at a flat rest you know it is calibrated.


To switch what a gauge displays, just tap and hold on that gauge and a menu will appear.


To view your max boost, simply double tap on the boost gauge (double tap again to view live boost, max boost is reset after viewing).


JB4 ® is a registered trademark of Burger Motorsports Inc ® and is used with written permission.

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Download APK for Android
Currently, JB4 Mobile APK download is not available. Please proceed to download from the Google Play Store.
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Get from Play Store
1. Click "Get from Play Store
2. Download JB4 Mobile from the Play Store
3. Launch and enjoy JB4 Mobile

Comments about JB4 Mobile Android Version

Unit itself is great. The app is great when it connects. But sadly that's far too rare. And the company doesn't seem to care. Doesn't matter if you have Bluetooth or hard wired set up either. Most users experience the problem where it just won't connect. And then randomly once ever couple hundred attempts it might work. If they ever care enough to fix this very real problem the JB4 will be once of the very best options for tuning tubo cars. But without being able to connect I can't recommend.
Does it's job very well with little issues. Occasional crash when pushing new tune settings in, and the resolution can get screwed up if you flip to portrait and landscape too many times really quickly. Every very minor bug is fixed with a restart of the app. JB4 Support is amazing. The system has made our 2019 VW rocket like it should have from the factory. It is loads of fun fine tuning your map bit-by-bit and getting more power, economy, and fun. Hands down recommend!
Works well, zero connection issues. I believe the placement of the Bluetooth adapter on the JB4 is the reason for some issues people are having. I placed mine where the install instructions recommend and have never had a single failure to connect. This thing makes a very noticable difference and increase the fun factor of driving my vehicle. I can't imagine driving without it now. Zero fault codes because of the JB4. Worth the money and definitely go for the Bluetooth/app combo.

JB4 Mobile APK FAQ

Is JB4 Mobile safe for my device?

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Yes, JB4 Mobile follows the Google Play content guidelines to ensure safe use on your Android device.

What is an XAPK file, and what should I do if the JB4 Mobile I downloaded is an XAPK file?

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A file with .xapk extension is a compressed package file. It is a container file format that incorporates APK and additional associated files required for the installation. The XAPK format was introduced to package the APK file and OBB file together for a seamless delivery and installation process. XAPK format can help reduce the package size of application. On mobile phones, users need to install the XAPK installer first, and then install XAPK files through that installer. You can find the installer here:https://apkcombo.com/how-to-install/. But on PC client, you just need to put the file on LDPlayer.

Can I play JB4 Mobile on my computer?

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Yes, you can play JB4 Mobile on your computer by installing LDPlayer, an Android emulator. After installing LDPlayer, simply drag and drop the downloaded APK file into the emulator to start playing JB4 Mobile on PC. Alternatively, you can open the emulator, search for the game or app you want to play, and install it from there.

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