Resonators

Does your exhaust drone at cruising speed, or do you want a rawer sound? A resonator dampens specific frequencies in the exhaust, while a resonator delete kit typically replaces it with a straight pipe. This category is for you if you want to fine-tune the sound of your project.

What does a resonator do?

A resonator typically targets the frequencies that cause drone in the cabin at steady speed, and it changes the character of the exhaust less than an actual muffler. If you remove it with a delete kit, the sound typically becomes louder and rawer, and the drone can become more noticeable. An X-pipe resonator delete kit replaces the resonators on a dual exhaust and at the same time connects the two pipe runs in an X-shaped crossover. If you want more sound dampening, regular exhaust mufflers are an alternative, and you can find both types together under mufflers and resonators.

How to choose a resonator or delete kit

• Pipe diameter: Inlet and outlet must match your system, e.g. 2.5 or 3 inches.
• Body dimensions: Diameter and length affect the dampening and determine whether the part fits under the car.
• Inlet and outlet position: Centered or offset depends on your pipe routing.
• Material: 304 stainless steel is typically more corrosion-resistant than 409, which can develop surface rust over time.
• Universal or vehicle-specific: Universal parts typically require modification and welding, while vehicle-specific delete pipes are made for a particular model.

Examples of brands in this category are aFe, Magnaflow, Vibrant, CORSA Performance and Stainless Bros. At aFe, for example, you will find both resonators and delete kits in 304 and 409 stainless steel.

Frequently asked questions

What is the difference between a resonator and a muffler?

Both reduce sound, but a resonator typically targets specific frequencies such as drone at steady speed, while a muffler to a greater extent lowers the overall sound level. Many exhaust systems have both.

Can I remove the resonator and still pass inspection?

It depends on the product and the car. Without a resonator, the sound level typically increases, so check the noise requirements and any approval for the specific part number before fitting a delete kit to a road car.

Does a universal resonator need to be welded on?

It depends on the system. Universal resonators are typically welded in or fitted with clamps. Measure the pipe diameter and the available space under the car so that the inlet, outlet and body length match your pipe routing.