Air to fuel ratio

[Maciejmysiak]

Hi guys, I'm new here and I just got my ride a week ago, but there is one issue I'm concerned about. In the gage center, my fuel to air ratio reads 14.0 during normal driving with 93 octane fuel. Apparently the perfect ratio should be 14.7. Is this an actual problem i should worry about or is this all within normal specs?
Thanks !

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[ypena02]

~14.0 is normal as most pump fuels now contain 10% Ethanol. 14.7 would be normal for fuel with no ethanol.

 

[Juben]

That gauge you're looking at reads in AFR (SP). SP means Stoich Point. The stoich point of E10 (10% ethanol) is 14.08; the stoich point of E0 (100% gas) is 14.70. That's what you're seeing and it's completely normal.

 

[Maciejmysiak]

Sounds good

Ok, thank for the info guys! I was just wondering if that's normal.

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