2021 vx cruiser ho

[Como161]

Is there a stock 8000 tune for naturally aspirated 1.8 ho Yamaha without having to change impeller? If so what kind of gain would there be adding additional 200 rpm and could I still use 87 octane?

[Como161]

Already have power filter and engine breather, ribbon delete as well as gp 1800 riva ride plate and riva pro series sponsons