Why Every 9th Gen Si Needs a Better Downpipe
Installing a 9th gen si downpipe is hands down one of the best ways to wake up that K24 engine without spending a fortune. If you've spent any time at all driving the 2012–2015 Civic Si, you know it's a blast, but it also feels like it's holding something back. That's because, from the factory, it is. The stock catalytic converter is basically a giant cork shoved into the exhaust stream, and swapping it out for a high-flow or catless unit changes the car's personality entirely. ...