Thanks for the Help everyone! It does sound like two pieces of wood slapping together... Sounds like it must be reversion . Im going to be able to relax and focus on my ride. 58 degrees today and the roads are still clear in western Colorado! Going to throttle hard tomorrow!
I have that on mine. It's valve train noise that echos in the pipe of the heavy breather. I've had three different intakes on mine. If you put the football cover back on it almost complete goes away. I know what you mean though its pretty loud.