Hi Adrian - I've got the same Cat problem - nasty rattle. Makes a nice noise when under full chat but I'm definately feeling a loss of performance since the Cat started rattling. Sounds nice but it seems to have lost its smooth pickup and shove above 3k revs.
Did you experience the same and was there a noticeable performance diff when you got your new cats on?
Mossy
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2002 S8 Aqua Pearl, entirely original apart from FE 20" OEM wheels and Milltek exhaust.
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