Parts ordered. One note is that there is a screen that sits between the solenoid and adjuster. IMO the screen has just as much likelihood of being problematic, I bought the screen as well.

So just an update. The solenoid still isn’t here, but I received the screen. Looking at the design I can definitely see that it could be problematic both from clogging and it has its own check valve. The CEL has not returned but the Durametric picked up the code. The issue definitely seems oil pressure related and seems to happen when the car is in a prewarmed condition. My cam deviations are .27-.29 bank 1 and .79-.82 bank 2 (holds steady but seems to vary on the day). These are very low deviations, which is good. I tracked cam angles vs nominal and bank 1 does not seem to track as well as bank 2, most notably if go to say 3k then lift, like between shifts and when cold.

To me this is saying solenoid or screen vs the actuator, I would expect a sticking actuator to be more of a consistent issue, although the only real way to know is to toss on the new solenoid and screen.

Finally got the new solenoid and screen installed. It was a pretty easy task, the hardest most nerve wracking part was fishing the old screen out and putting the new one in. The screen is inside the engine a good ways and you have to use a long magnet. There is no specific orientation of the screen (I had to call my local indy to confirm). The solenoid does have an orientation but you can’t screw it up due to a prominent pin and notch.

One intreating thing is that the screen design changed significantly. I had to call the pats place that I bought from to confirm, but it was revised. The old design has an internal baffle and is far more complex than the new, maybe this is what restricts oil flow and causes issues that I experienced.

So I only started it and bank 1 does seem to respond better although without driving it I won’t know for sure. It is raining here so it is doubtful I get to take it for a drive. The cam deviations changed slightly, possibly from a change in pressure going to the system? It wasn’t drastic, just a few thenths on each bank, but they were a touch different.

I will post pictures of the screens in a few.

So to put this to rest, it seems it was the solenoid and/or screen. Upon driving bank 1 responds noticeably better, in fact now bank 2 is slightly slower to respond in an off throttle back on blip. The code has not showed back up after a couple hundred miles, not even on the Durametric.