I think I found it:
Quote:
This is the compensation of the primary open loop fueling based on the combined correction of the 'Timing Compensation (MRP)' and 'Timing Compensation (IAT)' tables. The compensation is a raw enrichment offset value which is added to the raw enrichment offset determined by the 'Primary Open Loop Fueling' table. To determine the estimated change in the effective AFR, first convert the primary open loop AFR (x) in question to its raw enrichment value: ((14.7/x)-1). Then add the compensation offset from this table to the result. Finally, convert this total enrichment (x) to the effective AFR: (14.7/x+1). For example, if the primary open loop fueling map calls for an effective AFR of 10.5:1, this would be an enrichment offset of 0.40. If the compensation value was 0.10, the total raw enrichment offset would be 0.50. Converting this to an effective AFR would result in a value of 9.8:1.
