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Unrealistic high VE in modelled mode?


bruce3427

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Hello team, I just upgrade my fuel injector to ID 1050x. But after doing a tune, my fuel table have high VE number (higher than normal condition I think). I am concerned about high boost area will beyond the VE set range.

 

Car is 2003 Impreza WRX STI EDM. Currently I’m using Link G4+(WRX7-9) ecu, modelled fuel mode. Base fuel pressure is 300 kPa(43.5 psi). And I have fuel pressure sensor on my fuel pressure regulator. Due to IAT sensor is locate on intake manifold so I’m using IAT Trim table to correct heat soak problem (only in high IAT and low TP area).

 

I know Link modelled fuel mode need accurate injector data. All data came from ID Plug n’ Play Data so I think it might not be problem? Or maybe I am overlooking some other details?

 

My ecu set and log is attached. Looking for some advice, and any option is appreciated!

Modelled Fuel Mode Tune.pclr City Cruise.llg

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I suspect your fuel pressure sensor cal is wrong (hence your fuel pressure is wrong).  A 100psig sensor would normally be 0.5V @ 0Kpa and 4.5V @ 689Kpa, you have values 100Kpa higher than that.  (Some of the AEM datasheets are stupid with the Kpa calibration in absolute  and the psi calibration in gauge for some reason).

It should be like this:

7vjtRzT.png

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