Works Engineering Power-Plus Throttle Body increase horsepower and torque by optimizing airflow to your engine. On forced induction applications, this quick bolt-on has shown gains of 5-10hp. On high-output naturally aspirated engines, we have seen gains of 10+ hp. Our larger bore throttle bodies are capable of flowing enough air to support over 500hp. Work Power-Plus Throttle Bodies are precision CNC-machined from forged AL6061-T6 billet aluminium, vacuum tested, and hard anodized for increased durability.