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Super Moderator
Classic Audi Club Member
Join Date: Jul 2007
Location: Sissix-by-the-sea
Posts: 15,218
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How vital are they for an engine? When going from say 140bhp to 250bhp?
Just thinking aloud.
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1985 WR quattro, 1985 20vT RallyRep, 1993 MTM ABY S2 Avant. 2010 S3 Sportback.
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