Forum » General Tuning Discussion » Unrealistic high VE in modelled mode?

Unrealistic high VE in modelled mode?

General Tuning Discussion

Discuss all things tuning in this section. News, products, problems and results. 


Page 1
Author
45 Views

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 setting at 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. But all data came from ID Plug n’ Play Data so I think this might not be cause? Maybe I am overlooking some details?

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

Attached Files

I replied to your similar post on the link forum. It appears your fuel pressure sensor cal is wrong (calibrated in absolute instead of gauge) so your fuel pressure is actually lower than the ecu thinks it is.

Yes I have read your reply. Strange sensor datasheet leads to the problem. Your explanation is really easy to understand. I'll perform new test and post result here. Thank you Adam!