The Silver Bullet throttle body spacer is constructed from precision machined 6061-T6 billet aluminum and is designed using a serrated/helix design that creates turbulence in the airflow at the point just prior entry into the engine optimizing the combustion cycle. This turbulence helps the air/fuel charge burn completely providing increased horsepower, torque and improved throttle response. During testing, Silver Bullet throttle body spacer have resulted in 4 Horsepower and 8 lbs. x ft. of torque max gains. Silver Bullet Throttle Body Spacer Kit BMW M3 (E36) 92-99 L6-3.0L/3.2L Serrated/Helix Design; Helps Air/Fuel Charge Burn Completely; Increased Torque; Increased Horsepower; Removes Whistle; Creates Turbulence; Durable 6061-T6 Billet Aluminum BMW M3 (E36) 92-99 L6-3.0L/3.2L