Wetjetperformance.com 4 inch elite air intake if the best intake you can get for your money. Gets more rpm and better acceleration/response on your 230 or 300 Rxtx rxpx Gtx Seadoo.
The velocity stack is a great idea. It allows you to use much larger volume piping. End result is more air. More air the more potential you have to make power... Very nice idea...