15 July 2008
Should You Put An Exhaust System On Your Truck?
Posted by Jason Lancaster under: Cars .
Truck owners love how powerful their vehicles are. Trucks need lots of power because they’re designed to haul and tow heavy loads without difficulty. However, many truck manufacturers use fairly quiet exhaust systems on their vehicles, despite their powerful engines. If you want your truck to sound as powerful as you know it is, or if you’re aiming to reduce the constrictions on the exhaust, then consider adding to or altering your truck’s exhaust system.
Luckily for you, the factory exhaust system on your truck is efficient, and can be easily improved with just a few modifications. The exhaust manifold is the first component of the exhaust system. It directs exhaust from each cylinder together into one or two main exhaust pipes. These are usually fairly efficient and don’t need to be replaced. If you decide to change them though, find a good set of headers with ceramic coating and factory mounting points for sensors. Usually though, the factory exhaust manifold will be perfectly fine for your needs.
The next components which the exhaust gases travel through are the catalytic converters. There’s really no benefit to changing or modifying these, and taking them off is a bad idea. Today’s modern catalytic converter is very efficient and legally required, so it makes sense to leave it alone. You would only consider replacing the factory catalytic if you were adding an extremely powerful engine upgrade, like a turbocharger or supercharger.
After the catalytic converters, the exhaust gases cool somewhat and enter the muffler. Again, the factory exhaust system is pretty good and the standard mufflers aren’t very restrictive. Replacing them usually won’t result in a significant hp or torque gain…3-5 hp and 5-10 ft-lbs of torque on average. However, after market mufflers will make your truck sound much better. The rumble you’ll hear with after market mufflers is exciting, and well worth the cost. After leaving the mufflers, the exhaust will exit out of the tailpipe. Tailpipe tips are a popular add-on, but they’re decorative only, and have no impact on your exhaust system’s performance.
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, do you want to hear the exhaust ALL the time? In other words, when you drive down the highway, is a little exhaust drone OK? If not, make sure you choose a muffler that’s not described as being loud. Check the web and ask your local muffler shop for advice on finding a good muffler. Many muffler manufacturers are even putting sound clips on their websites now.
Second, do you want your muffler to be just loud enough for passersby to hear, or do you want a loud that will make people stop and stare? If you’re looking for that extra attention, you’ll want a muffler with words like “racing” or “glasspack” in the description. Otherwise, these mufflers may be too loud for your tastes.
Also important to consider is whether the new muffler is a single or dual exhaust. If your factory exhaust system came with a single exhaust muffler, then your truck will work just as well with a single after market exhaust system. Dual exhaust systems are more expensive, but you’ll get a nicer sound and better look. If you use a dual exhaust, check that your installer works around the trailer hitch and/or leaves room for one so you can add it later if you choose.
Finally, what exhaust system material is best? It’s a decision that should be based on geography. If you live anywhere near the corrosive effects of saltwater, stainless steel is the smart choice. While it’s more expensive up-front, it will last much longer than galvanized or aluminized steel in these climates. People living in dry climates really don’t need to purchase stainless steel - if rust attacks their system, it will be years before anything is damaged.