The factory exhaust system on the 3.8-litre 981 models delivers a distinctive flat-six tone, but the standard catalytic converters restrict exhaust gas velocity and limit potential power output. Replacing the restrictive factory components with high-flow Exhaust Downpipes or aftermarket manifolds reduces backpressure and releases trapped horsepower. Pairing these with a valved or non-valved Cat-Back Exhausts system fundamentally alters the acoustic profile of the vehicle. We also stock Misc Exhaust Parts, including clamps, hardware, and sensor spacers required to ensure exact fitment.