I haven't ran without the o2 sensor but i am running
without my engine coolant sensor. After days of
poking around I found the reason for my hesitation
probs. engine coolant sensor. removed replaced.
noticed car ran cooler/rich without ecs. connected.
hesitation problem came back 2 weeks after new ecs
was installed so I disconnected ecs. connector and voila!
no hesitation rich/cooler engine.
No pinging @10 psi with no ic and timing @ 25 btdc.
I'd like to find the source of the ecs b.s. but thats
another thread, for now I'll run rich. still 500km to
50$ tank of 94, Hard drivin.