There’s no need to call a doctor for this STI, jokes Cars.com reviewer Kelsey Mays. The performance-oriented version of Subaru’s redesigned WRX debuted at the 2014 North American International Auto Show in Detroit this week, and the STI version looks a lot like the regular model of the sedan but a hood scoop, quad tailpipes and giant rear wing help differentiate the two. Check out the video for more.