08 Suburban VVE and MAF maps/pids HELP!

[picnic_george]

Here is a tune and a log I took of a suburban. I got part of the VVE better using the STFT but for some reason I don't know what PID(s) to log and/or if there is a BEN for it. I have BEN from serial WB (CALC.WO2BEN) but it says the expression is {GM.EQIVRATIO}*{EXT.WO2LAM1} but {GM.EQIVRATIO} is not a valid PID.

I'd also like to read the MAF BEN factor in the same way.

Forgive my ignorance, it's been a while on efilive with anything other than my trans am, and this is my first time messing with an e38 computer on efilive.

Thanks
Kris