Error Inj Max Duty in M400

[Ankur]

Hello,
I am running the single-cylinder GDI research engine via M400 ECU. I am facing an abrupt injection end while engine operation, and showing the error "Inj Max Duty", on decreasing the pulse width on main fuel table, which is quite absurd. I have checked the fuel pressure and also with the new injector of the same specification. I have been operating at those values (pulse widths) earlier without any issues, but suddenly it is causing problems now. Kindly help what could be the reasons for this behavior.


Ankur Kalwar

[David Ferguson]

Make sure you aren't getting any Ref/Sync errors. Extra pulses interpreted as increased engine speed can lead to follow-on errors like maximum duty cycle exceeded.

Are you logging all the ECU Errror bits? Can you upload a log showing this problem.