Quote Originally Posted by rusted86
Ya thats the first thing ill be checking. Hopefully thats all it is something might of come loose. No didnt get a spin with the diff in the other car. It seemed good and tight tho. Didnt seem to be any play either side or anything like that. Would I be right in saying it shouldnt be makeing any noises tho?!

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don't have one in my IS (yet) afaik they shouldnt make a bang. When you say a bang are you giving it a sudden shot to the drive train like clutch kicking?