Air/Fuel Ratio

Changing Wide Open Throttle Air Fuel Ratio

Air Fuel Ratio Units of measure

Converting AFR Units of measure

Modes the pcm can enter that affect your Air Fuel Ratio

Stoichiometric Air/Fuel Ratios

Fuel Stoich AFR by weight
Gasoline 14.7:1
Natural Gas 17.2:1
Propane 15.5:1
Ethanol 9.0:1
Hydrogen 34.0:1
Diesel 14.6:1