Engine efficiency is above 100 in many regions

[Stephen Dean]

The M1cfg file is used with the v1.3 M1 Packages, with the current v1.4 M1 Packages, the injectors are in the drop down list and are selected from there. As the way that the injector calibrations is handled changed with these versions, there is extra information in the M1cfg file that isn't needed in the v1.4 injector calibration data, and it is this extra information that caused the error message that you received. As is shown by the red diamonds indicating that the data has been changed, the primary information that is required has been extracted from the file, and the error can be disregarded.

[Shivshankar]

Thank you for the reply.

May I find out if a change in calibration of the injectors will lead to a change in fuel pressure? Currently, our set up is such that the fuel pump is made to run at 100% duty cycle, there is no fuel pressure regulator and it used to run at 330kpa.

[Stephen Dean]

Normally the fuel pressure is set by the FPR, so as long as the fuel pump can keep up with demand, then the pressure will be constant. Are you sure that the car doesn't have an FPR? it would be uncommon for a EFI engine to not have one.

It may be that if you do not have a FPR in the system, that the new calibration has the injectors open for a lesser period of time, and thus bringing the pressure up as less is pressure is bleed off.

[Shivshankar]

Dear Sir,

The fuel pressure regulator is located in the fuel pump(stock cbr600rr), according to the manual the fuel pressure at idle should be 344kpa.

It was also noticed that when the fuel tank's level is full, the pressure is constant at 330kpa how ever as we go for more runs and when the fuel volume drops, the pressure seems to increase to 350+kpa. Before the fuel inj calibration was done, the fuel pressure used to be constant at 335kpa.

[Calibrated_Dan]

Changing the injector setup shouldn't affect fuel pressure, but you could spend a lot of time chasing an "issue" that isn't really an issue at all.
Are you measuring the fuel pressure with a sensor or relying on the M1's datachannel? If the later then this channel will automatically self populate based on the settings you have set of Fuel Pressure Regulator in the event that there is not a pressure sensor fitted.

The ultimate goal is to ensure that the engine operates correctly regardless of Differential Fuel Pressure across the injector, have you managed to achieve that currently?