Been searching for days, my 82 zxt all stock except upped the boost a little and hks bov, I have a wide band so I'm not just guessing.
Anyway my car was running rich everywhere, like 11-12/1 vac and 10.0 (maybe richer, limit of wb) over 3lbs of boost, until the other day it was hot out and after shutting it off for 30 second in a drive thru it leaned out to perfect! For 1 day, now rich again
I can tune the afm and get it to drive nice except under boost, chts checks out fine so does the air temp, the only problem I can find is there is it is o/l from pin33/ chts yellow/green to ground, when there should be like 2k ohms or something. Can't find any solid info on this except in the fsm it briefly mentions this
I even jumpers the chts straight across and it's still pegging 10.0 in boost