Fmf powercore 2 end caps changing question??

The end cap size is determined by what model quad the silencer was made for. Going to a larger end cap will gain NO extra power. The diameter of the rest of the silencer would still be the same.
 
The end cap size is determined by what model quad the silencer was made for. Going to a larger end cap will gain NO extra power. The diameter of the rest of the silencer would still be the same.

ahhh ok... jw cause i thought it would change the sound... guess not :( how can i make it sound higher... like a higher pitch..... i just put it on, and from the stock one, it got a deeper tone now.... almost like a 4stroke at idle. how can i make a higher tone.... if i can..