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