Throttle Position
 

well on the SAFC II it displays throttle position, now at neutral it displays 25% but if i press the throttle no more than a inch it instanly jumps to 100%. im not sure about SAFC IIs in general actually.

Two things:
1) I suspect you have an S4, so the TPS is only short range. The sensor is fully extended at 1/4 throttle.

2) The S-AFC has an initialize function. When you select it & confirm "yes" the turn off then on the key, it begins re-learning all the sensor max & min values.

well i dont really have any idea how to use or tune it. its a 88' TII S4.

You need a wideband AFR gauge (or the loan of one) for tuning.

If you're a cheapskate like me, a narrow band AFR gauge is better than nothing.

There is a lot of information in ths forum. Keep reading..

thanks much for the response. actually right now my cars not even running.. many many problems. hahaha.

my help thread: https://www.rx7club.com/2nd-generation-specific-1986-1992-17/1988-10th-ae-not-starting-538268/

the car i purchased: https://www.rx7club.com/showthread.php?t=514720