Hello I got a 1993 nissan R33 GTST coupe with 115k km where I can't get the clutch throw right. Good year over extended my clutch throw by the master a couple years ago causing the overstroke condition disengaging.
The the only way it ever worked was with a sticky clutch pedal with a extremely short adjustment when I first got it.
The clutch got hard idling before and I had to shut it off a couple times in the beginning of my ownership cause the pedal didnt return fully by itself.
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Maybe a new clutch master cylinder would fix it if the overextension you mentioned damaged it.
A brand new r34 GTT master cylinder didn't fix it, the adjustment of the throw gets it to cycle again how to used to
What does the MAF sensor have to do with your clutch?
If it needs a new master itself, I'll be just as dambed as the maf sensor.