Roland Mayer began his career engineering Audi’s inline-five in the first Quattro, so if anyone can best tune these potent little engines, it should be him. Cue his company’s latest five-cylinder upgrade of*the Audi RS3, the MTM RS3 R. MTM (Motoren Technik Mayer) launched to fame with the S2 RSR, which was making 422 horsepower […]
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High Five: MTM RS3 R Upgrades Our Favorite Audi with 565 HP
