I notice when I log AFR Map on Evoscan, it is off from the numbers I see on the High Octane Fuel Map. I know the AFR's themselves will be off from the High Octane Fuel Map, but I thought logging AFR Map would show exactly what was on the High Octane Fuel Map. It's off nearly 1-1.5 points. AFR Map will log a higher number than what's in the High Octane Fuel Map.

Any thoughts? The car responds to leaning/richening the map just fine, just AFR is all funky.

Thanks

 

Any takers?

 

i was wondering this myself. but maybe there are adjustments done by the ecu that you and i aren't aware of that throws them off. maybe a combination of interpolated values and some type of trim?

 

It's possible, I wonder if the larger injectors I'm running is causing this.