No, it was not loud at all, the volume was fine, it just sounded as if:
A) Your headset volume was a tad too high, making you speak louder
B) You were simply very excited due to VR (and maybe other things that your Rift showed you that we could not see )
C) Your VR Experience made you shout, as well, that's what you do when you're in the cockpit of an old warbird, sitting behind a V12 engine ...
Your mic volume was actually set too low, as when you'd been in a 1946 pit, we would have a hard time hearing you.
Must say, it was kinda weird to hear you speak that way, normally you sound so quiet and controlled, and docile ?