How To Adjust Air Fuel Ratio On Fuel Injection. Airfuel ratio is controlled by modifying the jetting. For NA Applications - For cruise and idle situations a value of 147-150 stoic will be ideal.
In mechanical fuel injected racing engines tracking elevation changes is especially important due to the finer control over the engine on the part of the engine tuner. Use a scanner to get an air-fuel mixture reading and you can also use a five-gas analyzer which is used in emission testing. Weve just installed a Sniper and are getting very erratic AFR readings.
The Target AirFuel Ratio table is truly the tuning table used when an engine is running closed loop with the learn function enabled.
When you step on the accelerator pedal the Long Rod tells the Fl. Within reason the engine controller can adaptadjust to a change in air flow by. Again CO levels should be between 1-3 for each of these ranges. As you can see the airfuel ratio isnt even close.
