Depending on where you're riding, sometimes they do and sometimes they don't recommend just the intake cam. You may want to verify it with hotcams.

 

But, they added power and is defanitly faster than stock cams.?

 

It's significantly faster, but it may have something to do with the fact that I ported, upgraded the carb and added the DRZE gaskets at the same time I did the cams. I have heard that you loose low end if you do both cams at the same time and nothing else. Try at least doing the gaskets and the valve springs at the same time. It's a pretty cheap addition (~$100-$150). The carb later (~$400) and porting (~$250) when you can afford it.