So ive been thinking lately about some performance mods for my bike. 2006 zx 636. Has 21xxx on the clock and just had the valves adjusting. The only performance mod as of now is my micron slip-on that was on the bike when I got it. The Micron looks and sounds fun but, I wouldnt mind a little bit louder or even to know what a better exhaust would be. I know I need to get a power commander and remap her but that's besides the point. Should I keep this exhaust and look to do a different upgrade or would I benefit from a better exahust?