E85 lambda chart
Does anyone have a chart of what lambda represents on a chart vs AFR Having the car on E85 and I will only tune it on lambda now, but i need a conversion chart so I have an idea what the numbers mean. The wideband doesn't care or know what fuel it is reading and it actually reads natively in lambda - Or to be more accurate if there is an excess of hydrocarbons or oxygen in the exhaust. So a reading of 11.5:1 on E85 with a stoich setting of 14.7:1 would actually be a lambda of 0.78. I currently use 9.87 for Stoich with E85, Running on the united pump E85. Theoretically your target lambda in the base fuel table doesnt need to change. I was running .79-.78 uptop on pump 98 but Ive heard if guys lifting cylinder heads at that lambda or richer with big boost ie25psi and above.