- + 15 crank hp & + 14 crank torque. - 2 ½" (63.5 mm) diameter tubing (reduces thermal stress). - 22 lbs. (10 kg) weight savings. - replaces OEM valved Porsche sport exhaust (pse). - reuses OEM headers and cats (no cel, retains OEM software). - intoxicating growl at idle, partial throttle and wide open throttle with the valves open. Factory quiet with them closed! - no ecu software programming necessary. - includes dual 90mm tips - made in Germany. In our relentless quest to meet all of our customers exhaust needs; we wanted to create a special black edition system that retains the OEM headers and cats. The benefits are 3 fold, you can pass emissions with ease, you don't need to run a software file (for th...(choose a part on the right to read more)