wat can i do to give it more power?

 

Same thing you do to all engines.......Pipe, filter, jet kit, cam, high compression piston...........I prefer Curtis Sparks pipes for the 660 if noise is not an issue. I also like the JE pistons, but have heard that JE had some issues with the 686 piston for the 660, so if you want a 686, CP is a good choice. I also like Webcam cam, but Hotcams makes a good cam for the 660.

 

anything to do that is cheap to start out?

 

Generally for the 660 an aftermarket airfilter, slipon exhaust, and jet kit will make a good boost in power. Next would be a cam, Hotcams has a mudbuster for lowend, Webcams also makes some decent cams. Depending on how you ride, trails, tires, etc, then a clutch kit could make a good difference as well in transfering power to the ground.

If you don't have the money for an aftermarket exhaust, you could do the filter, jet kit, and gut your stock exhaust...if done properly can net some decent gains...so I have read anyways...

Wiseco also makes pistons for the 660's.