[ArticNemesis]

If you want to rule out valves, FIRST make sure your timing is correct,
then do a compression test. Granted, the results will be lower because the engine isnt warmed up, but if you are getting an across the board reading, your valves are fine. If you bent any valves, you will have incredibly low #'s, or none at all.

Once you rule out destroyed or bent valves. Boost leak. Find out where the air is leaking to. It doesn't just disappear.

Pull the IC piping off. Start at the throttle body elbow, and boost leak test, if it holds pressure there, then install the next piece of piping and do it again. Keep going until you find/fix the leak.

If it's leaking when you test at the TB elbow, it's leaking from the elbow, the throttle body seals, or the intake manifold.