Re: AFR tuning
First, the most important tuning should be the "Cruise" AF and timing. Next low speed acceleration and Idle mixture and initial timing are not that important.. Your looking for performance and economy.. On an engine like yours. ignitopn timing in cruise should be 26/28, degs, AF F 14.5/15. A at WOT about 20 degs, and AF 12.7/13.2 AS long as the engine starts the timing and AF are ok. The efficiency of the combustion chamber makes a difference.
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