Does Your Truck Need an Exhaust System?

July 15, 2008 on 3:48 am | In Finance |
by Jason Lancaster

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.

The factory exhaust system already on your truck is already a pretty efficient system and doesn`t really need much modifications to be improved. The first part of your truck’s exhaust system is the exhaust manifold, which channels exhaust from individual cylinders into larger main pipes. These systems are efficient and don’t need to be changed, but if you decide you want to anyways, you’ll need a set of headers. Quality headers like the ones you’ll want will have a ceramic coating and factory mounting points for the sensors. Most of the time though, the standard manifold is more than good enough.

After the manifold, exhaust travels through the catalytic converters. These are already very efficient and legally required to be on your truck, so you’re much better off leaving these alone. The only time you’d do really do anything with the factory catalytic converter is if you were adding an extremely powerful upgrade to your engine, such as a turbo- 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.

Changing the factory muffler on your truck for an after market muffler will make the biggest change to your exhaust system, so it’s the obvious move to make. Here are some things to consider about 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, do you want something that people can slightly hear when you drive by, or do you want something so loud that the neighbors know exactly what time you leave for work every morning? Words like “racing” or “glasspack” usually indicate exceptionally loud mufflers, so watch out for those terms unless you want a lot of attention.

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.

The last thing to consider is exhaust system material. You should make this decision based on where you live. Drivers who live near saltwater will want to invest in stainless steel. It may be more expensive, but it’ll hold up again saltwater corrosion for much longer than galvanized or aluminum steel. If you don’t live near a saltwater environment, stainless steel will be a needless expense. If rust ever gets into your system, it will take years for you to feel the effects.

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