Failed Emission Test..., ...running too lean Options

[LatinKraze]

I was told by the Smog shop that I was running too lean. They said that I wasnt getting enough air and the Air to Fuel was off by a bit. They said that maybe if I removed the air filter while doing the test it might help for it to breathe better. So I removed it and they ran the test again and the numbers came back 5x worse. I have to get 1.2 reading at the most, with out the filter it ran at 10.0-15.0, and I am currently at 2.08 with the air filter in. They said it might be the Mass Air Flow Sensor. I went to the dealer and they said that my car does not have one. I think it might be my O2 sensor. Can this make my car run lean? I dont want to change them out cuz the previous owner cross threaded the mofos. Where can I start fellas? Any suggestions? Thanks

-Ivan-

[Supersprynt]

Oh man they dont know what they're doing. Did you bring it to the mechanic or no? If so what did he so? Lets cover the basics in lamens.

Lean = more air than fuel.
Rich = more fuel than air.

Now taking ur filter off will add air, making it more lean, the more lean, the less fuel is being burned, thus there is less emissions. You have 2 O2 sensors, one in right up top there, and one below, you need to get under ur car to see it. I would suggest making sure both of these are clean and usable. If you are running lean, put some injector cleaner in, maybe ur injectors are a little clogged.