|
HI Walt,
My comment was more in general to say that you do not have to have a CO meter if you have a wide band and if something electrical is controlling mixture based on O2 sensor feedback then trying to adjust mechanical system to change mixture will be compensated for by feedback control system. All my CIS cars have been earlier models and did not have a frequency valve so I have never looked at how and when they work to control mixture.
I sounds like you are looking to see if you could modify the signal to FV to control mixture for tuning purposes vs emission control. It would be interesting to see if the FV amount of control can make a significant change to AF mixture at wide open throttle or if the amount of control it has is too small and only works well to trim mixture when fueling requirements are low (idle and/or part throttle).
john
|