For tuners, a Holy Grail of Injector voltage Offset

[XfireZ51]

Originally Posted by Hib Halverson

Being that this is a tuning thread, let me hijack it a bit.

What do you guys do for engines forced to run on E10?

Do you work with E10's different stoich or do you just tune for a certain lambda value from your wideband?

Lambda is lambda regardless of the stoich which is why tuning for E85 can be simpler than it looks. Lambda is the measure of O2, not AFR. We have 10% ethanol here in the Midwest and I reset my calibration to use 14.3 as stoich.