Still trying to tune the EC2 after the latest upgrade. The new version as a feature to compensate for primary and secondary injectors of different sizes. The manual talks about compensating for secondaries that are larger than the primaries by turning the program knob CCW. I have assumed that to account for my secondaries that are slightly SMALLER than my primaries, I should turn the program knob CW. However, best I can tell this is only making the problem worse. Now it takes full rich on the mixture knob to run the engine.
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