Shouldn't be. O2 sensors need some time to warm-up, and until then it should be in open loop.
Is this a REAL problem, or is this a screwup in the scan tool? My guess is that it's a problem with what the scan tool reports, not what the vehicle is actually doing.
At idle? Is there mechanical noise--lifter tapping, rod knock, piston slap, cracked flexplate, etc. that the knock sensor could mistake for "knock"?
Seems unreasonable. Idle speed must vary considerably. If not...maybe another scan tool screwup.
Does it ever change? If the timing is advancing and retarding, I'd expect the IAC position to vary also. Has someone dicked with the throttle-body base idle screw? Is that screw still sealed behind it's "tamper-proof" cover? If not, you'll need to re-set proper base idle.
Seems reasonable IF the O2 sensor is hot enough to be effective.
WHAT vacuum? There's no vacuum sensor...
...there's a Manifold Absolute PRESSURE sensor, and if that's displaying in inches of mercury, the engine has almost no vacuum.
A little high at idle.
Insane. Should be 14.x
Not way out of line. 128 is "perfect", but I wouldn't be concerned about 134.
Yes. The O2 sensor has to be hot, there's maybe a timer and a minimum coolant temp also.
No.
I don't know Tuner Pro. I can't help.