aFe 46-20415-B BladeRunner Aluminum Hot and Cold Charge Pipe Kit Black w/ Turbo Muffler DeleteaFe 46 20415 B BladeRunner Aluminum Hot and Cold Charge Pipe Kit Black w Turbo Muffler Delete Flow and Performance: Smooth transitions in the mandrel bent aluminum tubing decrease turbulence and minimize pressure loss, increasing horsepower and torque. The BladeRunner I C tube kit provides a smooth transition between the turbo and the engine for lower operating temperatures and increased power. Turbo Muffler Delete: This oversized 2 1 4in OD Turbo