Is cam advance using real time closed feedback? Meaning, are measurements of manifold air pressure, flow rate, temperature taken and then a decision is made in the ECU to advance the cam? Or, is it open loop and the computer advances the cam X amount vs RPM without computer input.
I would imagine, that cam advance that is built into the L99 does not used closed feedback or else there would be no need for the advance limiter with an aftermarket cam.
It would be neat, if someone could design a closed loop computer that would advance the cam to an optimum position in real time, with an any cam. I would imagine that, if volumetric effeciency is measured in real time that smart cam advance could work out quite well. Unless it already exists?