Why you should run the N54 JB4 + Flash instead of just the Flash

This brief article explains the importance of using a JB4 even if your BMW is already Flash Tuned.

1- Advanced Safety system

• If boost exceeds your safety settings, the JB4 reverts to the stock map
• If AFR is too lean (15% variance), JB4 reverts to the stock map
• Extra safety for Port Injection and WMI

2- Absolute Boost Control System

• JB4 targets an absolute boost level where boost is ALWAYS the same (Independant from external factors)
• JB4 has ability to set max boost per gear
• JB4 automatically tunes Wastegates and fuel trims
• Autotune maps that gives max safe power based on mods, fuel, and IAT (Intake Air Temperature)

3-  On The Fly Changes

• Boost Levels
• Max boost per. gear
• Gauges 

4- Better Feedback for the Driver

• Ability to change ANY settings, map, gauges using the JB4 app (on phone) without the need for laptop connectivity
• Ability to monitor real time boost, AFR timing, knock, and meth flow
• Ability to data log and email it to BMS using the mobile app (without the need for any cable)
• Ability to record data, 250x per second

5- Complete Tuning System

• Eliminates need for additional modules
• No lift shift
• 2 step
• Anti-Lag
• Port Injection Control
• Flex-Fuel sensors
• Water/Methanol Control
• Ability to work as a cohesive unit rather than have separation between the modules

6- FREE Upgrades and Support

• Lifetime Firmware Upgrades and Backend Flashes
• Free support from the BMS team
• Answers to any questions available on www.N54tech.com

7- No Change In DME

• All DME table values stay intact 
• JB4 adds performance and safety while keeping DME 100% in charge

Thank you to 'BMW Fanatic' on YouTube for the awesome explanation!

Link to video- https://www.youtube.com/watch?v=fQ39N2SpPMc