I've heard lots of really good set ups, here's some of my favorites:
[ame="http://www.youtube.com/watch?v=pxwZP_yAufA"]2013 SCION FR-S takeda Momentum Sealed Intake and Cat-Back-Exhaust - YouTube[/ame]
[ame="http://www.youtube.com/watch?v=OfqhyWRSKSg"]TOYOTA 86 / SUBARU BRZ HKS Hi-Power Muffler SpecL 32016-AT022 - YouTube[/ame]
Top two systems in my mind right there
