I wouldn't get too hung up on that target AFR number. For fine tuning I actually prefer looking at the fuel tables in a non-adjusted format (e.g. just straight hex to decimal conversion).

At the end of the day what really matters is the actual AFR, and understanding how far you have to adjust the target AFR to get your actual AFR into the range that you are looking for.

l8r)

 

Just to make it clear... I'm looking at the target AFR from EvoScan to find out which load cells I'm hitting. I realize that the number are realy arbitrary.

 

Even if the AFR target in the logs is correct, I still don't think it is necessarily any more accurate than using the timing numbers to try to figure out which load cells you are hitting. Depending on how much knock the ECU sees, it will start to gravitate towards the low octane fuel map settings, which would put you into a similar situation as with trying to figure out how much timing was pulled.

You could always put some racegas in the tank to get an idea of what a clean run should look like.

l8r)