I also have a loud rattle coming from the passenger side pipe. Not to get nasty with FFR but don't you think someone at the factory would look into this problem and think of some way to fix it for already built cars and then apply the fix to all new orders???? I think I will add a new post asking this question. Unfortunately, I run the risk of serious abuse from those on the forum who get their knickers in a twist if anyone says the least thing negative about FFR. Well here goes.