I've done a fair bit of research so far and have a scanner over the long weekend. I'm trying to interpret the readings on the scanner and am trying to find out whats wrong with the car. It stumbles around 2000 rpm usually when warm, but i cant seem to find anything wrong with the car. MAF seems ok, IAT sensor seems ok (30-40C+ more while sitting). BLMS though seem a bit odd, but im not sure what could be causing this:

The left BLM's consistantly about 10 units above the right side BLM. Is this a significant amount at all? Also it seems to hover around 135-140 on the right side BLM.

I was able to find two "non active(?)" codes when i put the car in road test mode: 22 and 55. I think 55 came on when i was flooring it up a hill, the check engine light came on a few seconds and went off. I think the fuel pump might be going. 22 was the TPS "low voltage".. not sure what that means.

Any Experts out there want to help me out? Should i be doing something specific with car to find this problem? thankS!