ok im planning on running the safc ii but ive had this question in my mind for awhile now.

with this unit, do i still need like a wideband o2 sensor with a meter? or does it read this already??? or do i need to jus get the o2 sensor so that it reads the voltage from it better??

im so confused, first dive into engine tuning as before i only slapped on parts onto my prelude without even thinking about tuning.

 

I use an S-AFC and use a pocketlogger to track the narrowband readings from the stock O2 sensor. This limits my tuning ability somewhat. It is far preferable to tune using wideband O2 readings, which means you'll need a device to log wideband and install a wideband O2 sensor.

The S-AFC doesn't read O2s at all.

 

You will need some form of logging. I use a pocketlogger along with wideband o2.

 

do i need an air/fuel meter with the wideband o2?

where can i get a wideband o2 sensor?

what if i take my car to a shop to tune it, would they hook up their own o2 sensor? or jus go from my stock. how do they tune it if i dont have a wideband or a logger?

thanks for the info. helps alot.