996 Turbo Exhaust manifoldsThe Porsche 996 turbo is one of our primary marque's. After reviewing the factory exhaust, major flaws were pinpointed in all areas of the design, the sound being the most striking flaw. But also torque curves, peak power, and turbo lag were other areas that could be significantly improved. The factory exhaust is also needlessly heavy, and situated at the very rear of the car.