JB4 log question..

j1gilles · 06-24-2014, 07:27 AM

What does the "FF" value on the JB4 csv log track? It's at the top of the log in between FUE and future use B. I'm sure I could find it but I'm at work and they block almost every website!

mike@x-ph.com · 06-25-2014, 04:44 PM

Quote:

Originally Posted by j1gilles

What does the "FF" value on the JB4 csv log track? It's at the top of the log in between FUE and future use B. I'm sure I could find it but I'm at work and they block almost every website!

FF: Short for "feed forward" or the fixed component of the PID boost control system. This is the starting point for boost control and the PID will then adjust PWM above or below this value as needed for fine tuning. The user adjustment variable FF / wastegate adaptation scales the FF value and will adjust itself over time as part of the normal JB4 learning routines.

06-24-2014, 07:27 AM	#1
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