With sax. removed, I hear odd noise...

[DavidT]

I have a hole in the airbox, at the inlet, where the saxacone WAS.
At WOT, even before the secondaries open, I can hear an odd noise. I am guessing it is coming from that opening. It kinda sounds like a paper bag flapping around shrug
Anybody else notice anything even similar to this. IT happens the very moment the pedal goes to the floor, and it doesn't do it in N or Park.
This isn't the cams is it?

 

[SHOerwin]

Doesn't sound like from your description. If it sounds like a loud ticking or diesel knock, then yeah, and don't drive it or start it if it causes you any concern. Get 'em welded! beer