The easiest way to improve your engine's performance is to bolt on a couple of GMC 4X4 Headers. Their main function is to make it easier for the motor to push exhaust gases out of the cylinders so it maintains its maximum power. In the simplest terms, it works in the following way: when the engine is running, gas is burning and expanding in the cylinder which is what essentially supplies the power, which is why it is called the power stroke.

The exhaust stroke is when the exhaust valve opens and releases the formed gases out of the cylinder. From there, they end up in the manifold and then pass through the catalytic converter and out the muffler.

If the gases build up in the manifold, back pressure occurs resulting in a loss of power. This is where GMC 4X4 Headers come in. Headers give each cylinder its own exhaust pipe, of equal lengths, to ensure an equal spreading of the gases into a larger pipe called a collector. Since the gases come out evenly in this collector, instead of building up from the cylinders into a common manifold, it eliminates back pressure. Essentially, for you, all of this means one thing- more power! Though there are also many other improvements that you can make to improve your engine's performance, GMC 4X4 Headers are a must in your quest.Say no to back pressure and order some today! You'll be surprised at the difference that a few small bolts can make.