This is a discussion on Understanding OAR. I have been having some issues. within the F150 Ecoboost Performance forums, part of the F150 Ecoboost Garage category; Originally Posted by Burns363R I think bad fuel was the reason for the high oar. Im still seeing the OAR creep up to +.5 when ...
LSPI isn't much of a problem on these engines, they will downshift before getting into it or they will refuse to run the cam timing to make enough load.
As far as OAR, on my 17 it's like this from what i can see:
-1.0 = inferred octane of 85
0 = inferred octane of 87
1.0 = inferred octane of 91
I guess gen2's are exactly opposite lol.
Last edited by w00t692; 05-29-2019 at 10:50 AM.