What should wide open throttle AFR be?
12.5 to 13 AFR
WIDE OPEN THROTTLE: 12.5 AFR Best performance for most vehicles is in the 12.5 to 13 AFR range. Going too rich will have the opposite affect and decrease your performance.
What AFR makes the most power?
Economy? A naturally aspirated engine, running on pump gasoline will normally make the most horsepower at an AFR of about 12.8 – 13.0. An AFR of about 14.6 will produce the best fuel economy.
What is the best air fuel ratio with Turbo?
If the amount of gas in the mixture is not increased accordingly–that is, if the mixture is too lean for the engine–then the peak cylinder pressure and combustion temperature rise; this raises the likelihood of knock. Thus, most recommend that turbocharged engines maintain a ratio around 12.0:1.
What should my AFR be at full throttle?
Most stock to slightly modified engines will run just fine at an AFR of 14.5:1 and yield better MPG. If you prefer better PERFORMANCE then we suggest to run an AFR of 13.5:1 or even richer to around 13:1. FULL THROTTLE / HIGH RPMS: 12.5 AFR – target with RED mode Driving full out within a gear will bring you into our FULL THROTTLE zone.
What does AFR stand for in four stroke engine?
AFR Values & Characteristics in Four Stroke Engines 6.0 AFR – Rich Burn Limit (engine fully warm) 9.0 AFR – Black Smoke / Low Power 11.5 AFR – Best Rich Torque at Wide Open Throttle 12.2 AFR – Safe Best Power at Wide Open Throttle 13.3 AFR – Lean Best Torque 14.6 AFR – Stoichiometric AFR (Stoich) 15.5 AFR – Lean Cruise 16.5 AFR – Usual Best Economy
What should the AFR reading be at idle?
Firing up the car, the gauge settled into a 9.5-10.0 readings at idle, which is ridiculously rich. The ideal AFR readings at idle should be between 13-14:1. No wonder it would idle in freezing temps with no problem. Driving didn’t change the readings much.
What does AFR stand for in carb tuning?
We borrowed a well used AFR set up from our friend, EFI tuning guru Scott Clark (Dieselgeek on the forums). An AFR gauge, which AFR stands for Air/Fuel Ratio, uses an O2 sensor at he beginning of the exhaust pipe to read the ratio of air to fuel as it is being expended through the exhaust.
Most stock to slightly modified engines will run just fine at an AFR of 14.5:1 and yield better MPG. If you prefer better PERFORMANCE then we suggest to run an AFR of 13.5:1 or even richer to around 13:1. FULL THROTTLE / HIGH RPMS: 12.5 AFR – target with RED mode Driving full out within a gear will bring you into our FULL THROTTLE zone.
AFR Values & Characteristics in Four Stroke Engines 6.0 AFR – Rich Burn Limit (engine fully warm) 9.0 AFR – Black Smoke / Low Power 11.5 AFR – Best Rich Torque at Wide Open Throttle 12.2 AFR – Safe Best Power at Wide Open Throttle 13.3 AFR – Lean Best Torque 14.6 AFR – Stoichiometric AFR (Stoich) 15.5 AFR – Lean Cruise 16.5 AFR – Usual Best Economy
What should my AFR be in idle mode?
IDLE / LIGHT CRUISE: 13.5 AFR – target with GREEN mode When you start your vehicle we refer to this as being in IDLE condition. When you shift into gear and drive at a low mph we refer to this as being a LIGHT CRUISE. With 14.7 being the industry standard stoich AFR value, we typically like to see these conditions run slightly richer.
What do you need to know about the AFR?
UNDERSTAND GENERAL TERMINOLOGY: Air-Fuel Ratio (AFR) – The most common reference term used for mixtures in internal combustion engines. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. Oxygen (O2) Sensor – Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas.