C6z - logging brake pressure and/or steering angle via A/D inputs?

Anybody here dabbled with logging brake pressure and steering angle on a C6Z using the MPVI Pro? Unfortunately, the PID's don't appear supported but I'm wondering about piping them into the A/D inputs on the MPVI. Has anyone tried doing this before? I can't find any info on the sensors themselves, although at least for brake pressure the voltage trace should be sufficient (it's not that I want to know what my actual pressures are, just how smoothly I'm applying the pedal while on the track) but for steering angle I'd like to be able to find where I'm not getting back on the gas quickly enough so being able to figure out "degrees" from the sensor would be fantastic.