Hondata

The AFR you are talking about is consistent with the stock one, it is not Lean for the conditions described. 11 psi and 140%Airc can barely be called load for this engine.

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You really have nothing to worry about. There ...

I'm using a Hondata base map designed for 95 RON fuel, but I'm seeing AFRs around 14.5:1 under boost (~10 psi), especially during partial throttle (around 60% pedal, ~3900 RPM, MAP 10 psi).

Despite being on a "safe" 95 RON tune, the ECU appears to remain in closed loop, following the lambda target ...