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can i also say that while factory mpg is horrid 17/20, that i get better miles per gallon just by having a different tune in cruise. while Mazda has i guess a stoichiometric Afr while in closed loop mode, i cruise at about 13:1 as this provides better off boost res response. i know i can get this much much much leaner durring cruise and change the timing some, it does not affect the miles per gallon much.
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