For clarity we’re showing just four of the six combinations of throttle bodies and pulleys tested. The light blue/dark blue lines represent the largest pulley run with the stock and Kenne Bell throttle body. The red/green lines are the smallest pulley (highest boost) paired with the stock and Kenne Bell throttle body. As expected, the missing middle test would plot equally between the tests shown. Clearly Kenne Bell’s blower system allows dialing in the desired power, and these tests peak at just 13.4 pounds of boost. There’s a whole gaggle of steeper curves to be had once the supporting oil pumps and supporting hardware is available.