E85 Economy questions

[jamesm]

Originally Posted by moto-mike

Using EcuTek you can control actual fuel delivery globally with custom maps. So I can multiply the fuel quantity without changing the airflow nor fueling scalars. So the display is accurate and load calculations are correct. The other platforms rely on changing the injector variable, which is not consistent due to the DI/PI combination. Changing airflows will be global, but it will throw off the load calculations and the meter.

They actually adjust the di flow rate (or pressure targets) to compensate on the di side as well, otherwise fueling would be crazy as the pi/di ratio changed as you mentioned. It's not a terrible way to do it, but it's certainly not as straightforward as a custom map. I've done it both ways, and needless to say you can pry my racerom from my cold dead fingers lol.

[1086]

is it possible to reset the average counter? I haven't tried

[Fast_Freddy]

Originally Posted by 1086

is it possible to reset the average counter? I haven't tried

Yup, just hold the button down.


FWIW, I changed to 20% higher flowing injectors on my last Denso ECU car and the trip computer calculated 20% greater mpg consistently. This was without a tune or piggyhack.