Quote:
Originally Posted by Toy2play
I still a bit confused by your post. I'm not sure the purpose of saying that you cant achieve 14.7:1 unless you are over 191 degrees. I know very little about afr, but have been forced to get a better understanding because of the supercharger. I'm just trying to grasp your statement since my afr gauge does not show that at all. Are you saying that your afr is not 14.7:1 ratio under 191 engine temp? If so, where are you getting this reading?
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I’m getting the reading from the above PID settings VIA my ScanGauge.
When the engine cold starts it’s target air fuel ratio is really rich. In the weather I’m having it starts out around 7 to 8. It slowly ramps up the target AFR as the engine warms up around 1 min into this the engine goes closed loop and starts using the front O2 sensor to achieve the target AFR. The warmer the engine the higher the target. It uses the O2 sensor and the LTFT and STFT to achieve the target AFR. When the engine hits 191f the target AFR is at 14.7. 188f engine temp is around 14.4 AFR as an example.
I don’t know your year buy my 97 would have the target AFR around 14.0 at 181. I can verify that in the morning by watching the engine temp and AFR target at the same time.
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