Would it hurt to put a pipe on my raptor before I break it in. I don't see what it would hurt as long as I still take it easy. Anybody got any suggestions?

 

So long as you rejet it properly.

 

If you plan to take the machine to the dealer for the initial service/inspection, I 'd wait until after that. In the event they would find anything wrong the non-standard parts you have installed could be their excuse to void the warranty.