it's most noticeable above 3k rpm when you let off the throttle and it was also present at cold start this morning but disappeared when warm at idle.
the car doesn't drive or respond any different to normal.
A mechanic mate had a very quick look at it and thinks it could be the pulleys near the charger.
He noticed one did have a bit of play in it but very minimal.
Anyone had a similar issue or seen it before?
Cheers
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Team BoostedTeam 330mm