the SAFC is very popular with many other import cars. I have one on my Mitsubishi. Actually it will go + or - 50% fuel, and has a WOT, and a prt throttle fuel map.

The SAFC works by intercepting and modifying the signal from the air meter. this will fool the ECU into adding more or less fuel.

Do understand if you mess with anything with this much adjustment range that you have taken the responsability for the fuel mixture into your own hands, and the price of mistake is steep.

I wouldn't tune from just o2 readings, I like to have an EGT, and datalogger running.


John C.