Resonator Delete Pros and Cons – What You Should Know?

Vehicles are manufactured with their features and operations to fit the kind of vehicle made or model. However, some car owners prefer to modify their cars so that it can be entirely different from the regular kind of vehicles out there.

Do you desire to improve your car’s performance and fuel mileage with minimized weight? Resonator delete is one of the major modifications you can do to your vehicle to achieve this. Everything you need to be aware of about removing your car’s resonator has been unveiled in this article.

resonator delete pros and cons

What Is Resonator Delete?

A resonator delete is a modification or upgrade process that changes the flow of the pulses generated by your car moving through its exhaust compartment. It is basically the similitude of a large echo chamber.

Resonator delete helps optimize the frequencies of the pulses generated by your car, thereby achieving a certain level of improved power production. It could make your car’s exhaust sound loud and aggressive. However, it helps in maintaining optimum fuel mileage, high performance, and efficiency.

Types of Resonator

There are various types of resonators you may have to consider if you intend to perform a resonator delete on your vehicle’s exhaust compartment. Some of the types of resonators include the following.

  • Ceramic
  • Crystal
  • Coaxial
  • Dielectric
  • Surface acoustic wave (SAW)
  • Yttrium iron garnet (YIG)

It would be helpful to consider them one after the other before choosing the one that best suits your vehicle.

How Much Does A Resonator Delete Cost?

Modifying a car to boost its performance in some cases can be very expensive; hence, people only imagine how well they would have modified their car, but for the sake of the cost of what they intend to do. Meanwhile, resonator delete is not as expensive as most vehicle modification projects.

However, the resonator delete cost varies from one vehicle’s make and model to another. If you desire to improve your car’s performance, minimize its fuel mileage, and improve the sound projection from its exhaust, you can achieve that with a few dollars. Consider the average price range of resonators deleted from some cars.

Vehicle Average Price Ranges
Ford $120 to $200
Dodge $100 to $125
Honda $100 to $135
Chevrolet $110 to $150
Nissan $110 to $200
BMW $100 to $140
Infiniti $110 to $220

How To Do A Resonator Delete 

Performing a resonator delete does not take the whole day; it will only require about an hour to do a resonator delete. Having a resonator delete kit will also be an added advantage. Take a moment to understand the following steps to perform the delete.

resonator delete vs muffler delete

Step 1: Jack up the car

To do a resonator delete, firstly, jack up your vehicle and hang it on a good set of jack stands. Ensure to have enough space beneath the car to enable you to carry out the removal.

Step 2: Locate the resonator.

After lifting your car to create enough space under it, locate the resonator near (after) the catalytic converter; it is before your car’s muffler.

Step 3: Cut the exhaust pipe

Put on your hearing protection, hand gloves, and eyeglasses to protect yourself properly. Then, get a saw blade and cut off the exhaust pipe up to 2 inches forward from the resonator; do the same (cut off the pipe) 2 inches rearward from the resonator.

Step 4: Remove the resonator

After cutting the pipe 2 inches forward and 2 inches rearward from the resonator, take out the resonator from under the vehicle.

Step 5: Weld the Exhaust pipes together

The next thing is to weld the exhaust pipes together. Preferably get an exhaust clamp, hold the two exhaust joints together with the clamp, and fasten it with bolts on each end.

Pros And Cons Of Resonator Delete

Resonator delete comes with several pros and cons, which you must pay attention to if you are considering carrying out the modification. The following are some resonator delete pros and cons to consider before going ahead with the project.

Pros Of Resonator Delete

  • Legally accepted modification: Modifying your car with resonator delete is legally accepted in most locations, apart from NSW and a few other places. Therefore, you don’t have a problem modifying your car’s exhaust.
  • Change of exhaust profile: Resonator delete is one way to equip your car to produce a deeper and more authentic sound, and it doesn’t alter anything else other than tuning your car’s exhaust sound.
  • Reduced vehicle weight: Lighter vehicle weight is a great advantage for you, especially in reduced and efficient gas mileage. Pulling off your car’s resonator will eventually reduce its weight.
  • Minimized cost: Resonator delete is not as costly as some other vehicle modifications; it has a minimized cost of anything around $100 or less. If you choose to improve the modification by cutting out the device and welding a new straight pipe to the compartment, it will only be about $300.
  • Possible horsepower gain: Most vehicles get a boost of up to 5 horsepower after carrying out a resonator delete on them. If you had a heavy build-up of soot or any other form of blockage in your car’s exhaust compartment, the resonator delete would eliminate them, thereby improving your car’s engine horsepower.
  • No extra maintenance is needed: The resonator deletes it once and for all; you don’t need any inspections or repairs after completing a resonator delete on your car’s exhaust. You could as well restore the exhaust to its original state if need be.


  • Alters vehicle’s signature sound: Some vehicle makes and models like Ford F150, Ferrari, etc., are designed to produce distinctive exhaust sound that tags them as outstanding among other vehicles on the road. Performing a resonator delete on such vehicles will alter their signature sound automatically.
  • Alters speed of exhaust flow: Most modern cars are fitted with a special combustion cycle operation that involves the pistons pushing the exhaust gas that the engine uses out of the chamber so that it can be filled with fresh air and fuel. A resonator delete could affect this process.
  • Possibly affects warranty: Most vehicles come with a warranty period, and the warranty involves certain clauses that you must not alter. So, a resonator delete is most likely going to void your car’s warranty because of the alteration of the exhaust compartment.
  • Possible idling problem: After a resonator delete operation, older vehicles may have an idling problem because idling issues are usually traceable to an under-performing catalytic converter. Meanwhile, a resonator delete usually affects a car’s catalytic converter performance, resulting in an idling issue in older vehicles.
  • Triggers check engine light: Backpressure changes occur when you do a resonator change due to the impact of the operation on your car’s catalytic converter performance. When this happens, it may trigger your car’s check engine light to display on the dashboard or release a code in your car’s system.
  • Alters power production: Resonator delete can alter the way the pulses that your vehicle generates move through the vehicle’s exhaust system. This may require more power for the engine to work efficiently, resulting in power loss.


Is resonator delete illegal?

It depends. Generally, resonator delete is not illegal in most places; that means you are at liberty to modify your car’s exhaust compartment to your taste. If you choose to remove the muffler and the resonator to make your vehicle sound louder, it is your choice.

However, if your car is registered in NSW, it is illegal to perform resonator delete your car’s exhaust. The authority prohibits car owners from modifying their vehicle’s exhaust to enable the car to sound different than normal.

Therefore, you should endeavor to find out what is obtainable wherever your car is registered or wherever you choose to reside, especially if you have just moved into a new city. Violating the provisions of the law can be very tough due to the penalties involved.

What does the resonator do on a car?

A resonator cancels a particular sound frequency range from being produced from your car’s exhaust. It is a kind of echo chamber that alters your car’s exhaust. The resonator prepares the loud sound or noise from your car’s engine to be silenced by the muffler.

A resonator not only removes the loud noise; it typically changes the sound produced by your vehicle’s engine through the exhaust. A resonator delete sound differs from that of a muffler delete.

Does resonator delete increase performance?

Yes, it does. Resonator delete does not only alter the sound produced through your vehicle’s exhaust; it also ensures faster movement of exhaust gases. When this occurs, your car is enhanced with the capacity for less consumption of fuel, thereby improving its performance and efficiency.

If you desire to reduce your vehicle’s fuel consumption and boost its performance and efficiency, resonator delete is a sure way out for you to achieve your desire. Improved performance will eventually lead to increased vehicle usage satisfaction.

Is straight pipe bad for your engine?

Certainly, it is a bad idea. If you choose to modify your car by installing straight pipes on the exhaust like the exhaust style of a race car, you would be performing a bad upgrade that you may not like in the end.

Straight pipes can increase your vehicle’s exhaust gas velocity such that your vehicle’s engine performance is reduced below 2,500 or 2,000 RPM. This situation can make your car slower whenever you try to launch as you drive from a spotlight.

Which is better, muffler delete or resonator delete?

In considering resonator delete vs. muffler delete, they are closely related but with a slight difference. Muffler delete seems to be very famous among car owners who love modifying their vehicles. It boosts the vehicle’s sound, making it sound louder, as well as improves your car’s gas mileage as it reduces the weight of the car.

Meanwhile, resonator delete goes beyond increasing the sound of your car’s exhaust; it automatically alters the sound, which most car owners perceive as too much modification. This modification sometimes changes the originality of the signature sound of cars, making it louder and meaner. In that case, muffler delete is better.

Will the resonator delete pass inspection?

Resonator delete does not entirely alter your vehicle’s exhaust sound to the point that your car cannot pass inspection. Removing your vehicle’s resonator will not affect its emission. The resonators only change the sound and not the release of smog, such that it becomes difficult for you to pass inspection.

If you are currently contemplating whether your car will be able to pass inspection due to resonator delete, you have nothing to worry about as long as your car’s oxygen sensors are not moved.

Does the resonator delete fail MOT?

No, resonator delete does not fail MOT. It does not affect emissions adversely in such a way that will make your car fail MOT. Resonator delete basically changes the sound projected by your vehicle’s exhaust.

Your car can still pass the MOT check or inspection, irrespective of resonator delete. The modification doesn’t cause your car’s exhaust to start emitting smog; the exhaust continues to emit at an optimum level regardless of resonator delete modification.

Will a resonator delete throw a code?

Resonator delete alters your car’s catalytic converter and affects the back end of your car’s exhaust system. When such an operation alters your car’s catalytic converter, it sometimes triggers the display of a warning light on the dashboard.

In some cases, it can throw a code in your car’s computer system due to the backpressure changes performed via the resonator delete operation. This is why it is recommended for car owners to do muffler delete instead of resonator delete.

Final Words

Do you still have contemplations about resonator delete, what it means, how to do it, and how much it costs to perform the delete? I’m sure it’s a NO! Therefore, removing the resonator is the way to go if you want better performance and reduced fuel consumption for your car.

If you are a DIYer, both muffler and resonator delete will be pretty easy for you to carry out; however, if you are not sure of performing the removal correctly, kindly seek the service of a professional auto mechanic to do the job for you.

Osuagwu Solomon

Osuagwu Solomon is a certified mechanic with over a decade of experience in the mechanic garage, and he has over five years of experience in the writing industry. He started writing automotive articles to share his garage experience with car enthusiasts and armature mechanics. If he is not in the garage fixing challenging mechanical problems, he is writing automotive repair guides, buyer’s guides, and car and tools comparisons.

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