AudiWorld's Chris Ostberg tested a very special RS4 ,the MTM Supercharged Clubsport.
World-renowned Audi tuner MTM by putting a liquid-to-air intercooled supercharger onto the 4.2-liter V8 boosted the power output to 535 HP and 428 ft.-lb. of torque making possible for the Clubsport to surge to sixty mph in under four seconds.
Full Report
More reading on MTM includes a review of the company's supercharged S4 Clubsport Avant here...
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