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      <p>The exhaust system of the 911 Carrera models has been redesigned, acoustics included. </p>
      <p>The stainless-steel exhaust system comprises two distinctive and independent exhaust tracts. The catalytic converters heat up rapidly for effective emissions reduction. </p>
      <p>A selectable twin-tube sports exhaust system featuring distinctive polished stainless-steel tailpipes is available as an option. Activated by a button, it produces an even more intensive sports car sound.</p>
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