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  1. Forums - JB4tech.com - International Turbo Tuning Discussion

    May 29, 2023 · Channel: JB4 Mobile 12-10-2025, 11:36 AM First pull with JB4 by Jtinajero13 Hi, I have a gen 1 b58, with Dahler ATTC, catback exhaust, intake and running stage 2 xHP. This …

  2. What is the JB4PRO Free App? - jb4tech.com

    May 18, 2025 · We have both Android and iOS support. Older JB4 systems sold prior to around 2020 may need minor modifications to use the new JB4PRO adapter, but all newer/currently …

  3. JB4 for Chevy Silverado & Colorado - JB4tech.com

    Nov 19, 2025 · By default the JB4 ships on map1. For higher boost map, logging, firmware updates, and other features, you'll need a JB4 Mobile adapter for wireless connection to your …

  4. How to download jb4 on pc - JB4tech.com

    Hello, can I connect with the bluetooth-kit using the software on a latop. Or is the bluetooth-kit only intended for use with cell phones (Android/iOS)? Its only intended to be used with the app …

  5. JB4 + MHD Questions (No clear answer found) - jb4tech.com

    Nov 1, 2016 · JB4, MHD BEF, DCI, Secondary *** Delete, Alpina B3 TCU So, the main question I have been wondering about is, If you have both the JB4 and MHD BEF. Can you run a MHD …

  6. JB4 MHD back end flash maps for the S58 - jb4tech.com

    Finally gotten around to working on JB4 back end flash maps for the S58 platform! The maps are being developed on MHD+ and will be available free of charge unlocked to all JB4 owners who …

  7. Gauges not working when connected Lotus Emira V6

    Hi, I connected the JB Mobile app, amd I am able to select the mappings and load them, however the gauges stay blank, what am I missing? I am on the Lotus Emira V6.

  8. JB4 for 2022+ Subaru WRX - JB4tech.com

    Mar 2, 2023 · The JB4 will compensate for fuel and weather on it's own But you'll likely want to use a lower map (selected via app) when on straight gas and then a higher map to take …

  9. JB4+BEF+WMI, meth log guidance - jb4tech.com

    Hello everyone. I have recently installed the BMS WMI kit and need some guidance on what to look for in a log to see if the meth is working properly or not. My car is 2014 M235i, FBO, JB4 …

  10. Running lean, please help with guidance - jb4tech.com

    I'm really hoping to get some expert help from you guys in here, cause I've got some serious performance issues with my 335i. Got no idea if it's regarding to some wrong jb4 settings or …