Dyno Graph 3
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In order to reach a target of 12.9:1, a factor of 1.140 is entered into the Power Enrichment Fuel Multiplier vs. RPM table. Brian divides stoichiometric (14.69971) by 1.140 and he is commanding the PCM to achieve an A/F ratio of 12.894:1 at WOT. In this case, the changes to the PE table represent leaning the air/fuel mixture by 7.45 percent at the top of the rpm curve. (It should also be noted that simply inputting the correct calculations do not in themselves ensure the targeted A/F ratio. Although the factor is important, oftentimes fine-tuning is necessary to achieve the targeted A/F ratio.) View Related Article
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