Upgrading your exhaust is another way to improve engine flow. The more efficiently you can make your engine’s air flow with the use of intake and exhaust upgrades, the more power you’re going to make (and the sound is nice too)! Factory exhaust systems tend to feature smaller diameter piping, baffles, and bends, all of which limit exhaust flow. Increasing the diameter of your exhaust and decreasing obstructions is an easy and efficient way to make power. Whether you’re choosing an exhaust system, headers, or just a muffler to gain some growl out of your exhaust system, each item can increase flow and free up some ponies.