ellisd1984 Posted December 7, 2020 Report Share Posted December 7, 2020 is there a way to incorparate fuel pressure into a 4d fuel trim to allow for the slight vaiations I see over time to make my fueling more accurate? Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 7, 2020 Report Share Posted December 7, 2020 If you are using modelled mode then you can just set fuel system type to "FP Sensor" and that will take care of differential pressure automatically. If you are using traditional then yes, you can use a 4D table. Set it to "Always on". An example of a differential pressure correction for 3bar base pressure would look like below. The correction factor to calculate what to put in the cells is Sqrt(base press/actual diff press). mapper 1 Quote Link to comment Share on other sites More sharing options...
ellisd1984 Posted December 7, 2020 Author Report Share Posted December 7, 2020 I work in PSI and have a base fuel pressure of 50 (vacuum hose removed) so would this table look about right? I can't get it to go 2d for some reason Quote Link to comment Share on other sites More sharing options...
ellisd1984 Posted December 7, 2020 Author Report Share Posted December 7, 2020 I realised tha everything passed "0" should be negative numbers after I took the pic Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 8, 2020 Report Share Posted December 8, 2020 Correct, cells to the right of zero should be negative. Numbers look right. To make it 2D, go to the axis setup screen and set the Y axis parameter to None. Quote Link to comment Share on other sites More sharing options...
ellisd1984 Posted December 8, 2020 Author Report Share Posted December 8, 2020 Thanks, I was trying to type "none" and it wouldn't recognise it Quote Link to comment Share on other sites More sharing options...
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