JB4 4/20 alpha firmware with CANflap, CPS interface, and more...

[Mike@N54Tuning.com]

Hey guys,

BMS just posted the 4/20 alpha firmware and interface for those of you who are interested in helping test it. A full listing of changes is below but it includes the new CANflap feature. And for those of you testing the CPS module it now has full user/custom tuning adjustability. The JB4 is the only popular N54 platform to give you shade-tree tuners the option of setting up your own boost, air/fuel, and CPS curves! The firmware and interface are posted on BMS' forum.

1) Corrected 135i metric mode to properly reflect speedo input selections.
2) Lowered maximum FFPID value in 1st gear.
3) Added integration for CPS/SLD module including CPS charting.
4) Added "CANflap" commands to menu 4 options 4 (disable/go back to stock) and 5 (always open). This feature adjusts your factory exhaust flapper.
5) Added octane and oxygen sensor adaption reset commands to menu 4 option 7.
6) Rescaled FFPID function down 400rpm.
7) Added RPM by RPM global adjustment of air/fuel additive and CPS offset.
8) Complete redesign of data logging input functions for expanding user adjustable fields needed for #7.
9) Added "restore defaults" command to reset all user adjustable values (except map and meth settings) to the default values. Command is automatically sent following a firmware update to avoid firmware/setting compatibility issues.
10) Adjusted AFR output to always reflect leanest bank at any given time. Previously bank2 was always displayed.
11) If using external LM1 wideband FutureUseD=2 causes JB4 to use that value instead of factory widebands for all AFR use including internal safeties and nitrous trigger.
12) Default "exp1" logging parameter is now low system fuel pressure. Setting FutureUseD=3 outputs DME liters per hour consumed. Setting FutureuseD=4 outputs road speed in KMH.
13) Added iDrive radio auto on/off commands for testing. To enable set FutureUseD = 10. When engaging command mode via steering wheel controls iDrive screen should turn off. When exiting command mode iDrive screen should turn back on. In early testing it appears functional for 2008+ iDrive models only.

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[SlicktopTTZ]

Damn this tune is getting better and better! Love the ease of fuel, timing and boost adjustments. Great work Terry!

[Orlin]

ill be testing this out today, thanks for the info Mike and thanks for the update Terry

[Elsabor67]

Downloading after work today....WOOHOO!!!!!!!!!!!!

[Orlin]

I just had a chance to test this out before it started raining and I have adjusted the factory exhaust flapper which made it slightly louder and I can notice a slight performance upgrade from this update as well, the car feels a little bit more responsive. Thanks again Terry and the team at BMS!

[baylor1er]

I look forward to this update, especially since I just bought the JB4 today. Can't wait to get it and see what numbers I can pull at the track. This tune is going to be fun to learn and use. Nice going BMS.

[Elsabor67]

Uploaded mine yesterday when I got home. I definetly like how Idrive shuts off when going into command mode. Awesome!!!!!!!!!!!

More to come.........

[ScarecrowBoat]

ughhhhh i want the new firmware...

[Eminenceo3]

is the flapper disabled with the "golf tee" mod?
I just installed the JB+ and love it...
But I think its time to upgrade.

[stevenc]

^If you dont have a Jb4 you can disable the flapper with the golf tee mod, but if you have JB4 you can disable the flapper right from your steering wheel buttons.