specifics on compression testing, P0301

[billr]

STFT was between -33 and -36
I can't really say whether this is good without knowing what the units are. If that is "-33" as a raw value ranging from -127 to +127 (a common 8-bit range), it OK. If, however, it is -33% of theoretical fuel required, it is a significant rim, something to be investigated, but still not a definite problem.
LTFT was -17.2 (Are these good values?)
Same problem here, units unknown. However, if this is percentage, it is probably too much.
MAP sensor was reading 9 inches of mercury, a vacume guage had read 34 inches of mercury previously in the same hole (is the sensor bad?)
9" Hg is pretty normal, about equal to 21" Hg on a vacuum gauge. Since no vacuum much past 30" Hg is even possible, I question the gauge. In fact, I wonder why they even bother with numbers beyond 30" on the dial...
O2 sensor 1 reading fluctuates between about 0.35V, and 0.75V
That range is normal, but we need to know the rate; and you need to correlate the sensor reading changes to STFT
O2 sensor 2 reading fluctuates between about 0.28V, and 0.68V (are the sensors bad? What do good readings look like?)
Same comment
spark ADV was between 16 and 20 (Does this matter?)
Spark advance certainly matters. but that range and variation seems about right for idle
TPS was 0%, I was not touching the throttle
O2 sensor readings are listed again for some reason, with the same values, except they are positive
STFT was listed again as sensor 2, 99.2% (Does that represent the amount of air, or fuel?)That would be fuel, a percentage of theoretical fuel required for the current engine running conditions (rpm, MAP, CLT, IAT

What specific problems are you trying to solve now? A recap or update, please, it has been a long thread.