How And Why Move Emulsion Jets?

MomsDuster said

Ok so this leads me to some questions. 1) why the middle one?
2) what does this do to the fuel curve?

Warning, answering these questions will likely bring up more…,

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1) the middle gave me the most stable and flat fuel curve at cruise and WOT
2) see 1
Think of the emulsion as a means to tame the fuel flow to behave in a stable, predictable manner. Now add or decrease jetting to run the afr the combo likes the best.