Need help tuning AED carb

duster360 said

OK. Did some more tuning today. The 4 corner idle on this carb is super sensitive, move it a little and it changes a lot. I now have it idling in the high 13's. I am comfortable with that. I now need to concentrate on cruise situations. I am cruising low 12's. That is around 55 mph and around 2400 rpm. Tach is inop at the moment, just guessing from memory.

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At 55 mph you are cruising on the primary jet. You will need to go back to 66 to get rid of the surge. Read the plugs after you go for an extended cruise as YR said and see where you are at. The AFR is a tool not gospel. Installing smaller main air bleeds will delay primary fuel flow but the MAB holes will need to be tapped for that to happen.

I also noticed that when I gave it heavy throttle that it would go full lean just for a second and then drop back in the 13 range. Make sure you have instant pump shot when moving the throttle. You went lean getting into the throttle and recovered to 13 so I'll bet pump shot adjustment is off.
Hopefully AED will let you know the other specs.