JDP Motorsports is proud to sell VMAX CNC Spiral Ported Throttle Bodies. VMAX claims a 12-16 RWHP gain with no tune! How does it work? Well, the GM throttle body is not a smooth tube - in fact it has a ton of bumps and dips which causes turbulence in the airflow. That turbulance slows the speed of the air and therefore you get less power. VMAX solves this problem with a CNC machine, creating the best possible internals for your throttle body. If you want more power and instant throttle response, you need a VMAX throttle body.