Borla muffler is the straight wide open performance muffler with smooth deep tones. First and foremost the Borla muffler was developed to be a superior product line of performance mufflers. Wide open performance Borla mufflers outflow OEM chamber style mufflers by as much as 16%. This reduces engine heat and backpressure and improves exhaust scavenging from the combustion chamber. Borla muffler minimizes the power robbing effects of the OEM system to restore torque and horsepower to the engine. From aluminized steel, to polished stainless steel, there probably are Borla mufflers or Borla cat-back systems to suit your desire. All Borla cat-back systems feature fast-flowing mandrel-bent stainless steel tubing, a straight-through Borla Performance Muffler and a polished stainless steel Borla tip. Magnflow cat-back systems are designed to increase horsepower, torque and gas mileage, they also bolt directly onto your vehicle.