Soul Performance - Porsche 991 Turbo / Turbo S Cat Bypass PipesFor track use only. Not approved for road use. Soul Performance Products Cat Bypass Pipes replace the restrictive factory catalysts with free flowing straight pipes to unlock an invigorating increase in turbo sound, engine note, and throttle response. Revel in the new sensation of sounds as the turbos sing and exhaust crackles on deceleration. DETAILS + Fits all Porsche 991. 1 and 991. 2 Turbo vehicles (2013+) + Weighs 10 lbs 4. 5 kg less than factory