aFe Twisted Steel Header 09-16 Dodge Ram V8-5.7L Hemi (2 & 4WD)aFe Twisted Steel Header 09 16 Dodge Ram V8 5. 7L Hemi (2 & 4WD) If you are looking to improve performance, throttle response, and enhance the sound to your vehicle, aFe POWER Twisted Steel Headers are the answer. These increased tubing diameter and mandrel bends increase exhaust velocity which increases usable torque, resulting in a more aggressive throttle response and increased passing power. Tuning may be required depending on application. Twisted