nova2k7 ,dont know how good you are with a spanner, but its really easy (on a 330 at least )to remove the disa and check if there is any play in it ,which would result in the rattle noise ,at least you would know then if the part fitted is faulty.then take it back to the place that fitted it .
Its a while since I did it but pretty much a few screws and pull valve out and replace with new unit ,you may have to remove one side of an air pipe to move
aside for access,believe me I am no mechanic but it is simple ,search the web there is loads of how too,s
Hope this is of some help.