Bolt-ons( I,E) and tune I would think. I'm not sure how the RS4 and S4( NA ones) fair against the E92- But I have walked( RS4) and ripped 2( S4's) in the last 2 weeks
BTW I have a 7SPD auto. An NO HFC's stock cats.
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14 Q50 AWD, ARK, ECUTEK (SEB), Takda,