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As far as any learning goes- assuming it's similar to other Subaru ecus- When the ecu is reset the "learning" starts over. The car learns how much it needs to trim the air/fuel ratios to reach targets based on o2 sensor inputs. It also learns to advance the timing and to remove timing based on any knock conditions present. It also learns how much duty cycle it needs to apply to the throttle for idle and things like that. Full throttle operation is mostly open loop and there is very little long term learning in those conditions.
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