Anyone Know About This PFC Entry
 

A friend who is a Mazda shop service manager, said he heard that the full Japanesse PFC software instructions have been translated into English.

And that there is an adjustment that normally leans out the fuel when the TPS voltage has not changed for a while. This is suppose to cause that leanining out light stumbling condition that sometimes occurs when you cruise too smoothly for a while with our modded cars without O2 feedback control.

Does anyone have knowledge of this?????

My fd's PFC has the light stumble condition while crusing in town around 2200RPM but the o2 sensor is on. :confused:

The acceleration enrichment value is the value for the maximum injection amount when there is drastic accelerator movement. If accelerator movement is minimal, this value will be used as a base reference point to compensate for less movement.

Acceleration enrichment is not what I am talking about.

Constant steady driving where the PFC may or may not lean the fuel mixture for better mileage based on a time interval and TPS variation is different.

Thats interesting Chuck, I have no clue though as where to find the adjustment though, keep us posted.
John