Lucky 13 pump cone Sea-Doo

Utilize spacers to 'dial in' your RPM and find the 'sweet spot' for your ski. Testing different spacer arrangements along with exit nozzle diameters in order to dial in your RPM's will result in gains from holeshot, midrange acceleration and also top speed. In some cases it may also be necessary to depitch the trailing edge of your impeller slightly to achieve desired RPM's. Best results are generally achieved when spacing the cone back into the venturi as far as possible and then adjusting venturi nozzle diameter and impeller pitch to achieve desired RPM. It's important to note that each ski will vary. It's important for you to test different configurations to see what works best with your ski's setup. When you put forth the effort to dial this system in you will be rewarded with substantial gains.