Trouble Logging pressure drop across injectors - X4

[04torchred]

I am struggling to figure this out. I am trying to log the pressure drop across injectors PID in livelink II with my X4 and all I keep getting is a value of 0 in livelink.

However if I use gauge mode on the X4 handheld and select pressure drop across injectors I get the value of 50psi that I have my return fuel system set to.

Anyone have any ideas as to what could be my issue?

Its a return fuel setup with the FRPS left in the system to log fuel pressure.

 

[01blckcobra]

I had a similar issues to this a couple weeks ago. Would always read 55psi.
Ended up cleaning fuel filters and bleeding the fuel system.
Went away on its own after bleeding the fuel system. Not sure if a particle was stuck on the FRPS or what.
FRPS reads around 41psi at idle now.

also coulple different pids i get in Live links one does work the other doesnt. Maybe need an update on yours?

 

[decipha]

sounds like your logging a bad pid, sct usually has numerous of the same pid available, try selecting another