I've noticed that my WGDC will drop to 0% while cruising on the highway (noticeable increase in exhaust sound). But then it will pick back up at random times. There does not appear to be any consistency between when it drops to 0% and when it spikes back up.

What parameters exist in the tune that control this?

Here is a 2.5 minute log cruising on the highway around 70mph: http://datazap.me/u/ferocity02/wgdc-...&data=23-26-28

I don't mind that the WGDC drops to 0%, it's just annoying for the exhaust note to fluctuate so much. In fact, open wastegates seem to boost the highway MPG noticeably. I'd prefer them to stay open unless there is a high-ish load demand. Or at least drop back to 0% right away when load demand is low.

I am running MHD Stage 2 91 octane map.