GTST
you were right, my friends new gts-t had a ruber door stop it the bov plumback line. it was totally blocked. this was causing the flutter. anyway everything is the way it should be now.
im pissed at the person who put the rubber stop in there cause it was a real bitch to get out, cause it had worked its way right down the ''s'' bends of the steel return pipe. it ended up taking 2 hours to get the thing out.
its a really stupid idea to block ur BOV line just to get the fluttering noise(only to cause you trouble later, not to mention money)