One thing I haven't seen many people do is change out the cat, and I can't figure out why. Everyone seems to stick with a cat-back system. Joey D, VH5150, ShogunSamurai2005, how come you guys didn't swap the cat as well?
Edit: macatron, good to see a fellow CT'er here!
2012 Ford Focus SE Sedan, Red Candy Metallic Tinted CC, 5 Speed Manual
SE Sport and Winter Packages, 203A Equipment Group, 17" M&P Wheels
K&N 69-3517TS Intake, Magnaflow 15138 Catback Exhaust, WeatherTech 82573 Window Visors, 5% ON-35 Madico Tint