FSI V8s in general have problems with carbon build up in the valves. My RS4 had its valves cleaned once. Found a fair amount of debris and deposits in there. Not sure about other manufacturers
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Current: Alpine White F10 M5|H&R springs|12mm/10mm spacers|Eisenmann Race
Sold:Imola Yellow RS4-KW V3|MTM 10mm spacers|Hotchkis rear sway bar|APR Stage 1|Milltek Catless|RNS-E|Euro RS4 Flat bottom Steering Wheel
Sold:E46 323i
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