Because all gas engines are powered by a mixture of fuel and air, the faster you can get this mixture in and out, the better your vehicle will run. While intake systems are obviously used to draw in fresh air, exhaust systems are designed to push out expended gases. One of the simplest ways to instantly improve your engine’s performance is with a bolt-on accessory known as a header. The purpose of these popular aftermarket parts is to remove exhaust gases from the cylinders to make room for fresh ones. According to most automotive experts, Jeep Wrangler YJ headers can improve horsepower, fuel economy, and torque!
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