JB4 Mobile
JB4 Mobile is a data logger and display for use with the JB4 tuner.
App info
App description
Android App Analysis and Review: JB4 Mobile, Developed by Dmac Mobile Developments, LLC. Listed in Tools Category. Current Version Is 3.0.4, Updated On 27/05/2025 . According to users reviews on Google Play: JB4 Mobile. Achieved Over 47 thousand Installs. JB4 Mobile Currently Has 723 Reviews, Average Rating 3.5 Stars
The brand new JB4 Mobile application is finally ready for public release and has lots of great new features including:*Gauge theme customizations
*Built-in raw CSV data viewer
*Revamped User Adj./WMI data editors
*New modern UI completely rewritten from the ground up
*More seamless integration with our backend servers
JB4 Connect Kit Users:
1) Install the Connect Kit per the installation guide for your vehicle
2) Create your account/sign in with this app
3) Ensure JB4 Mobile has all requested permissions and that location services are enabled (required for BLE scanning on some devices)
4) Tap the Connect button in JB4 Mobile
BMS Data Cable Users:
1) Select the OTG option in Settings Tab->Advanced->Connection
2) Connect the OTG cable to your phone/tablet BY ITSELF
3) Connect the BMS Data Cable to the OTG cable
4) Tap the Connect button in JB4 Mobile
About The App:
JB4 Mobile is a mobile data logger and display for use with the JB4 tuner from Burger Motorsports.
JB4 Mobile allows you to monitor and log multiple parameters from your JB4 equipped car. Parameters such as boost, rpm, fuel trims, air/fuel ratios, ignition advance and much more are available.
Current Features:
Live gauges
Data logging
Data graphing
Log export via email
Code reading/deletion
Modify User Adj. (boost, fuel, etc.) settings
Modify WMI settings
Switch maps on the fly
Auto WOT logging
JB4 Firmware Updating
JB4 ® is a registered trademark of Burger Motorsports Inc ® and is used with written permission.
What's New
Updates to theme editor.
Updates to User Adj/WMI saving.
Minor error message updates.
Updates to User Adj/WMI saving.
Minor error message updates.
Rate and review on Google Play store
Total number of ratings
Total number of active users rated for: JB4 MobileTotal number of installs (*estimated)
Estimation of total number of installs on Google Play, Approximated from number of ratings and install bounds achieved on Google Play.
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Recent Comments
Lee T
Not sure what happened with this latest update but I just wanted to work when I turn it on and it connects to my jb4. Now I only have one choice for a color scheme on my gauges and when I have the gauges on they don't stay on. They time out with my phone and shut off. The previous Edition would stay on if you had the gauges up.
Zack
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!
Squigglylinezz
App is nice when I can actually use it. When connected it never wants to read any of the gauges besides boost, it randomly starts "logging" but won't turn off, and it won't read codes. If everything worked they way it should the app would be phenomenal. It's kinda disappointing that I paid like $20 for an app to have the ability to read gauges, data log, scan and clear codes but the only way I can get it to work is by uninstalling the app and then reinstalling.
Jeff Woodard
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.
Christopher Hurley
Logging is.. more or less bulletproof now. But, there are no updates to the values after the first pass of each group in built in graph viewer. Seems to make least one new file after midnight. Restarting app helps a little but after enough times it will not connect to the jb4 unit. Maps have no descriptions so it's anyone's guess what settings are being applied when I pick one.
A Google user
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.
A Google user
App used to update my M3 JB4 firmware and now it does not. Build #314 (latest as of today, 4/24/20). Downloaded latest file, via the app and the moment I select the file and select flash, it gives (JB4 connection required). I go back to the gauges view and the connection has dropped. Tried raising timeout value to 30 and hitting 'done' and when I return to that screen after going back and clicking 'connect', the value has switched back to 10. I have the phone right next to the unit.
Jason S
App 'works'...just not very well. I have a galaxy s20 and wanted to just be able to plug the otg cable in every time I drive. Instead, you have to make sure the car is completely turned off, pop the hood, then finagle with first disconnecting the jb4 end, connecting the otg end first, reconnecting the jb4 end then starting the car. Otherwise I receive a 'connection error' message. App is pretty much worthless for anything but loading new maps. A bit disappointed they cannot seem to fix this.