Valve Noise?

[TedB370z]

Its been a while since I posted, no issues and everything running great. Went to leave tonight and heard what sounds like valve noise? But its only when I give it gas, over 2900 RPM, and also does it when in park if I rev it above 2900RPM.

it IS cold, about 7 degrees outside, but this is my 3rd winter with it, and its never done it before, and its definitely been colder.

Just some background, 2009 Touring... 97,070 miles.. Royal Purple 5w-30 @6,000 miles on that oil so far, coil packs and spark plugs replaced around 70,000 miles, and I replaced all the idler pulleys, belt tensioner, and belt about 10,000 miles ago. I've always used synthetic. The car doesn't lose power when it makes the noise either...

https://www.youtube.com/watch?v=P7cRKcdtYCs

I'll try and take better audio tomorrow.... but at least gives you an idea..