Topic says it all. It sounds like that pop-corn push-toy your kids had when they were one. Somehow some little chunk of gravel got past the grill and is going halfway up the tube and rattling down. It's driving me nuts.
Put a shop vac over the cai hose and suck it out, or blow it out with a leaf blower.<br>or tie a peice of gum to a string, dangle it ever so slightly in the cai and.............jk haha<br> <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"> <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0">
Unless you didn't have an air filter on your car there is no way that a pebble got sucked passed the filter. I would open your air box up and clean it out and put a new filter in.<p>If you are hearing anything from the IC it is slag from the welding and I would bring the car to the dealer to have a new IC installed. If that dislodges it will put a hole through your piston.