Umm, okay. Why?
Bad, bad, bad, bad vibrations
jlevie
#22
[quote=“Ranger” post=72598]
I sure wish I knew how fast long term fuel trim takes to make adjustments.[/quote]
That depends on how the car is driven and the magnitude of the AFR deviation. Understand that adaptation only occurs as the result of an error as measured by the O2 sensor. Since O2 sensor data is discarded when the WOT switch is closed, a race engine doesn’t have much opportunity to adjust fuel trim if not driven on the street.