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MasterYous MasterYous is offline
Posts: 332
Join Date: Aug 2017
Car: BMW M240i
Default 07-12-2019, 08:42 AM

The info you seek is in here.
Originally Posted by Terry @ BMS
Adding JB4 v13 firmware to the first post to collect some data.

JB4 v13 firmware:

1) Added active safety system for high fuel pressure. JB4 will revert to safety is fuel pressure drops below 7 (1000psi) during full throttle.
2) Moved safety/VALET map to map8
3) Adjusted map4 to be a performance map between map3 and map5. With the BEF map4 targets around 20psi
4) Adjusted FF learning to be slightly more aggressive.
Implication to me is 7 is your "safe" minimum. I'm pretty sure 1 = 150 in terms of scaling as was posted in a post by Terry somewhere on this thread. Unless Terry changed it very recently, I log with MHD logger and they don't scale HPFP (reported in actual PSI); I have compared to JB4 at full idle (change logging collection method in JB4 app to "raw sampling" and log for 15 seconds), and the math worked out like that.

2017 F23/M240i Convertible (B58) / 6MT / FF Wires / EWG Wires / BMS Air Intake / Stock Exhaust / BMS Meth (100%) / 93 Octane
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