When selecting a muffler there are a few things you should take into consideration.

What type of vehicle are you choosing a muffler for?

The chassis type and layout of the vehicle can limit the choices you have in mufflers. Check the area where you will be mounting the muffler first to make sure you have enough room for the muffler you decide to go with. Vehicles with large cabin areas like SUVs or hatchbacks can be more susceptible to interior sound, or drone, when an aggressive muffler is chosen.

What engine size do you have?

Engine size and power output have a big effect on the sound level. On large displacement and high horsepower engines, larger mufflers will control sound better. Smaller displacement engines will sound less high pitched and buzzy when a more moderate or mild muffler is used.

How is the vehicle used?

For daily drivers and vehicles used for towing, we typically recommend a moderate or mild muffler. These mufflers will help control the interior sound level better than the aggressive mufflers during long drives or when towing a trailer. These mufflers will offer the same performance benefits as the more aggressive mufflers, but they will also control the overall sound level better.

Do you want to hear the muffler all the time, or just when accelerating?



The moderate and mild mufflers will give you a good performance tone when accelerating on the outside of the vehicle, while keeping the sound level more in check on the inside of the vehicle. The aggressive mufflers will not only be louder on the outside, but louder inside the vehicle as well and often have a noticeable drone when driving at part throttle.

How to measure for a muffler

When measuring the pipe size on your vehicle, it is important to be sure that you are measuring in the correct locations. Do not just measure the exhaust tip at the back of the car. Often times the manufacturer has added a larger tip to make the exhaust pipe look bigger. You will want to measure the outside diameter of the inlet pipe and the outlet pipe at the muffler. You want to measure both sides since some manufacturers do use different size pipes before and after the muffler. Take note of the inlet and outlet positions. If you are using the factory pipes, you will want to select a muffler with the same inlet and outlet configuration as the stock muffler. Also, keep in mind that in many applications, especially full size trucks, the factory muffler will be longer that the aftermarket muffler you choose. Because of this, you will need to supply some additional pipe to make up the difference in overall muffler length.