For tuners, a Holy Grail of Injector voltage Offset

[XfireZ51]

Originally Posted by Hog

Yes you are correct if you know the Ethanol percentage, I was was wondering if you could adjust the stoich point until the trims were close if you DIDNT know the exact Ethanol percentage. thats how the virtual flexfuel ECM's do it as they dont use an actual ethanol sensor anymore.

peace
Hog

I suppose you could but that's assuming the trims are already uniformly close which is usually not true. It would be making a "global" change to the fueling. Driving long distance you will encounter varying ethanol percentages. I suppose you could have several calibrations with the stoich already modified for the ethanol ocntent you are currently encountering and switch to that one. An Ostrich would come in handy for that. The only O2 window values I have modified are for idle. This was done for to compensate for greater overlap not E content. All other values are stock and seem to work fine as confirmed by viewing my WB O2. Al could also comment on that.