Exhaust Piping Size
From what I've gathered, the stock exhaust piping is 2". I'm trying to figure out what size I should get when I decide to upgrade, which will hopefully be soon. I'm looking at a Magnaflow catback system, but I see people with 2", 2.25", and 2.5" mainly. Are there any performance differences between them?
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