Our universal stainless steel Scavenger X-Pipe kits mount ahead of the mufflers in place of a traditional H-pipe and can provide significant torque improvement. Commonly referred to as an X-Pipe, not all X-Pipes are created equal. As any engineer will tell you, crossing exhaust streams incorrectly can create huge turbulence with the exhaust systems causing great harm to horsepower and torque generation. Flowmaster's patented and exclusive D-Port technology allows the exhaust pulse to create a low-pressure area that helps pull, or scavenge, the next exhaust pulse from the paired set of tubes. These systems work to produce significant torque improvement and are well-suited to modified "muscle car" application yet retain the classic Flowmaster sound.