Where are the fuel trims

[darb2464]

Hi I have been playing with nistune for two weeks with sr20 det,550cc inj , Know I have everthing going fine, I am just trying set the fuel trim level af learm is 118 at cruise, with wideband readings of 14.8 at cruise . light throtle 13.5 and 11.8 at wot, Once i sought this out ,I will try a vy airflow meter

[datsunboy]

whats a vy airflow meter?
fuel trim?....have you tried adjusting the K-value?

[kenbam]

vy commodore?

Not sure that will work, i almost certain they contain a built in frequency oscillator, which means its not an analog signal to the ECU, but a varying frequency signal. I'm sure it peaks at around 12000 hertz.

[darb2464]

I am just trying to work out on the fuel trim learn . what is correct reading ?.. When I use me hp tuners we set the fuel trim at -4 as the fuel trim map reading scale is -25 to 25+. Yes i just look up the vy airflow meter on the workshop manual and the return signal is in hetz.