So I've been reconsidering buying a pipe the past few weeks. FMF is one of the best company out there for pipes from what i've heard and read. I looked into their TT-R 125 pipes and noticed they had the Powercore4, and the Powercore4 Mini. The Mini is about $20 bucks less and i figure that 20 bucks is 20 bucks ya know? So my question is: What the heck is the difference between these two pipes? Obviously the mini is smaller and probably quieter than the Full Size but are there power differences between the two?