hi im new too, i am from argentina, and i dont know english very well so if you see some disgusting mistakes! sorry!
i m running the power core 2, and for me they sound great!! but down here is hard to find good stuff, and i was thinking of getting the new t6 pipes, the thing is that here no one has tommey pipes, you only can find "bills", "dg", or "fmf", so if you know how they work please let me know! thanks!