normalHello just curious what everyones AFRs are at . Currently im using jb4 with a custom map and they're right around 14.5 roughly. I've read that this is normal since the ecu targets that stock.
Incorrect. The OEM B58 programming is around 14.X for WOT as well. 2020's stay in the 14's. 21+ are a little richer and dip into the high 13's. I have many logs of my OEM tune 2020 on track with 14.X AFR's all day long.On any gasoline vehicle:
Somewhere in the range of 12.0 to 13.0 is common for WOT, with values clustered around 12.5 being most likely.
some great stuff right hereto provide some context to what @razorlab mentioned, DI engines can generally run leaner at low and moderate boost levels due to their heterogeneous charge (locally rich, overall stoich/lean)
quick example from Heywood 2nd ed.
Also, when fuel evaporates in a CLOSED cylinder, the cooling effect of evaporation is drastically more effective.
+1just to add some context, the fact of the matter is that jb4 can't adjust afrs. it's not ideal, but seems to work fine. any flash tune will target lower afrs as boost increases.