I doubt you would have to get a pcomm for end cans. TBH you'll only get getting afew extra horses anyways (obviously you'll get loads more sound from it though lol).
If you were to go all the way from the cans to the downpipes then yeah Id definately recommend a pcomm and a dyno but you should be fine as is.
The SP2 is a lush bike for sure though, and very much over looked here in the UK
