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

[mike@x-ph.com]

This brief article explains the importance of using a JB4 even if your BMW is already Flash Tuned. It specifically explains N54 applications but it mostly applies to all engines.

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 (Independent of 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 multiple modules working separate

6- FREE Upgrades and Support

• Lifetime Firmware Upgrades and Backend Flashes
• Free support from the BMS team

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!

[f87CSdrifterential]

looks like a lot of great info here. I currently have a JB4 with the original firmware. Are we talking BEF BMS flashes or something like MHD. I am curious as I plan on adding some power in the spring.

[mike@x-ph.com]

Originally Posted by e82drifterential

looks like a lot of great info here. I currently have a JB4 with the original firmware. Are we talking BEF BMS flashes or something like MHD. I am curious as I plan on adding some power in the spring.

HI,
MHD is only a hardware to load the map.
What matters is the map you are loading.

When you are stacking (Jb4 + flash), it is recommend you use the BEF BMS flash

[ShocknAwe]

Got a DP fix solution given latest CARB impacts on BMS tuning?

[mike@x-ph.com]

Originally Posted by ShocknAwe

Got a DP fix solution given latest CARB impacts on BMS tuning?

We dont offer DP fixes

[ShocknAwe]

Originally Posted by mike@x-ph.com

We dont offer DP fixes

Bummer. Thanks for making the thread regardless. Good resource I can point to now without having to type it all out each time.

[mike@x-ph.com]

Originally Posted by ShocknAwe

Bummer. Thanks for making the thread regardless. Good resource I can point to now without having to type it all out each time.

My pleasure