22. On the dyno we ran a Meziere electric pump, but on the street we wanted something mechanical in nature, so we went with a belt-driven race pump. These pumps were torture-tested on the Baja 1000 and are built to handle almost anything. On the top end, this pump moves well over 150 gpm in free-flow and has been dyno-proven to boost both horsepower and torque. The power gains are due to a more efficient impeller and cavity design. This allows the pump to spin faster without cavitating.