Yamaha 25 hp fourstroke

[beniloffen]

Hi,

I've got a yamaha 25 hp fourstroke, 2000 mod, and i'm wondering if it's possible to tune this engine up some(more power)?

If so, what do I have to do?

[99yam40]

Buy a larger hp motor and make sure the prop is larger also

[beniloffen]

Yamaha 25 hp fourstroke

Yes, I get it...

But is it possible to increase the power in this engine?
I'm not aiming for more than say 5 hp extra.

The question is: is this possible, and what to do?