Hmmm i say 12.5 is perfect so 12.4 is pretty good if u ask me

12.4 is lean?????? id say 13.5. ~12.8 and under your safe on e10

A/F goes around the timing table and what the engine likes.

You could be 11.8-1 to 13.5-1 to make the most power safely. Depends on the setup.

Hey man at least you're not spiking to 18:1 like me!! :klab:

my air fuel looked like tonys victims, 13-14

Bwahaha damn though, on the stock tune?

egr and air still need to be tuned out

If you say so, mine was tuned to 11.8 at WOT, guess it really depends on his cam and C/R. That's probably why I don't do tuning