Honest car modification guides. What every mod does, what improves, what gets worse — so you spend your money right the first time.
The Civic is one of the best platforms to start modifying. Here's what actually makes a difference, in the order that makes the most sense for your money.
The Honda Civic has been the go-to modification platform for enthusiasts since the 1990s and for good reason. It's lightweight, the engines respond well to modifications, and the aftermarket community is enormous. Whatever you want to do to a Civic — stance, sound, performance, or just making it look sharper — someone has already done it and documented every step.
The 10th gen Civic (2016–2021) in particular is special because the 1.5T engine that comes in the Si and Sport Touring models has serious potential with the right modifications. Even the naturally aspirated 2.0L responds well to bolt-ons. You're working with a solid foundation.
Most Civic owners ask whether to do suspension or intake first. The honest answer is suspension first, always. The handling transformation is more dramatic than anything else you can do, it changes how you interact with the car every single day, and it makes every subsequent mod more enjoyable because the car already feels properly set up.
After suspension, intake and exhaust can happen in either order depending on your budget. Many people do intake first because it's cheaper, then save up for a proper cat-back over the following months.
Before you buy anything: Check whether your Civic is still under manufacturer warranty. Some modifications — especially intakes and exhausts — can complicate warranty claims on related components. Read our warranty guide for the full picture.
The most common mistake first-time Civic modders make is buying cheap coilovers. There are $200 coilover kits on Amazon that look the part but run fixed damping, poor quality seals, and spring rates that are either too stiff or completely uncontrolled. You end up with a car that rides worse than stock and handles unpredictably. Spend at least $400–$500 on coilovers from a reputable brand — BC Racing, Tein, KW, Fortune Auto — or go with quality lowering springs instead.
The second most common mistake is installing a cat-back exhaust on a 1.5T without understanding that the turbo changes the sound characteristics significantly compared to a naturally aspirated car. Always listen to sound clips of your specific engine before buying. What sounds great on someone's 2.0L Si might sound completely different on your Sport Touring.
Honest car modification guides. What every mod does, what improves, what gets worse — so you spend your money right the first time.