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Most trucks are quite powerful - that's probably why you own one. Trucks are made to haul and tow thousands of pounds without difficulty, so they need lots of power. Yet despite their powerful engines, most manufacturers equip their new vehicles with a relatively quiet exhaust system. If you think your truck ought to sound as powerful as it is, or if you'd like to reduce some of the constrictions in your truck's exhaust, then you're probably considering adding to or changing your factory exhaust system.

Fortunately, the factory exhaust system is efficient and doesn't require much modification for you to improve it. The first component in your exhaust system is the exhaust manifold, the part that directs exhaust from individual cylinders into one or two main exhaust pipes. Most exhaust manifolds are pretty efficient and don't require replacement, but if you decide you'd like to replace this part, then you're going to look at a set of headers. A good set of headers will offer a ceramic coating, as well as factory mounting points for sensors. Again, most of the time the factory exhaust manifold is just fine.

The catalytic converters are the next stop for exhaust gases as they travel through your truck. It's not exactly a good idea to take these off - your factory catalytic is already very efficient and a legal requirement on your vehicle, so you'll want them to stay on your truck. The only time replacing the standard catalytic on your truck might be a consideration is if you were adding a very powerful upgrade, such as a turbocharger or supercharger, to your engine.

The exhaust gases cool a bit as they enter the muffler after going through the catalytic converters. This part of the factory system is usually also perfectly fine, and won't be too restrictive. Replacing the mufflers will probably only result in a small torque gain of 5-10 ft-lbs, and a hp gain of 3-5 hp. Using after market mufflers, however, will make a great change in how your truck sounds. It'll add an exciting roar that easily justifies the cost of the muffler. The exhaust exits the truck out of the tailpipe after the mufflers. Truck owners often like to add tailpipe tips, but these are strictly ornamental, and serve no functional purpose.

Obviously, the most logical thing to do if you want to make a change to your exhaust system is to exchange the factory muffler for an after market one. It'll produce the biggest, most noticeable results. Consider this when looking at after market mufflers:

First, will you be happy hearing the exhaust ALL the time? If you're not too sure you'll want the background noise to include exhaust drone every time you drive anywhere, try to choose a muffler that's not described as loud. Your local muffler shop and the Internet are useful tools for choosing a muffler that suits your needs. Some muffler manufacturers will even have sound clips on their websites now to help you create that perfect roar.

Second, how loud do you want your truck to be? Do you want something that turns heads, or something that will drown out the neighbours? Extra loud mufflers usually have words like "racing" or "glasspack" in the description, so go for these models only if you're ready to be the loudest thing everywhere you go.

Choosing between a single or dual exhaust muffler is another important decision you'll have to make. If your truck came with a single exhaust, then a single after market exhaust will be enough to keep good performance. If you prefer to get a dual exhaust, be prepared to spend more money in exchange for better sound and look. Make sure your installer works around your trailer hitch, or leaves room for one, just in case you decide to add one later.

Your final decision is which exhaust material system you'll use. The right material for you will depend on where you're located geographically. If it's anywhere near a saltwater body, buy stainless steel. It may cost more, but stainless steel will be a wise investment since the saltwater in your environment is harsh on regular galvanized or aluminized steel. Drivers in dry climates won't really benefit from the extra cost of stainless steel, since it'll take years for rust damage to occur if it gets into the system.

About: Author Jason Lancaster, an auto industry veteran, developed AccurateAutoAdvice.com. You'll find accurate car advice and tips for buying a car.

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