AFE Silver Bullet Throttle Body Spacer 2008-2023 Dodge Challenger / Charger SRT-8 V8 HEMI (5.7L/6.4L)This Silver Bullet throttle body spacer produces up to 12 hp and 14 lbs. x ft. torque and is constructed from precision machined 6061 T6 billet aluminum and is designed using a serrated helix design that creates turbulence in the air flow 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. This