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Muffler Delete Vs. Straight Pipe: Ultimate Comparison 2022


Minor horsepower gains can be made by removing the exhaust muffler and installing a straight pipe (5-10 horsepower, depending on the car). 

At higher revolutions per minute (RPM), the increase in power should be more apparent. What are your thoughts on mufflers delete vs. straight pipes?

Nevertheless, neither removal of the muffler nor straight pipes is very useful in fuel efficiency. Yet, both produce a significantly louder vehicle, which may be distracting and irritating at times.

My friends’ vehicles and mine have both had muffler deletes and straight pipes, and I can assure you that they are not the best routes to go if you’re looking to improve performance or sound.

Of course, there are far superior alternatives, which I will discuss!

Muffler removal and straight pipe are compared on various criteria, including performance, sound and cost, and legality. I’ll even get into the nitty-gritty of backpressure and exhaust velocity.

Let’s continue the comparison of straight pipe vs. muffler delete!

What Is A Muffler Delete?

A muffler deletion is the removal of the muffler from your car’s exhaust system. 

Many people feel that removing the muffler enhances the car’s sound and allows gases to flow freely, as mufflers produce back pressure and slow down the rate at which these gases are evacuated.

Muffler removal has been argued to increase the sound and performance of a car. Mule deletion is said to boost horsepower and decrease the total weight. That’s correct.

Muffler Delete

The removal of mufflers does not increase gas mileage. Whether you want to remove your muffler, you’ll need to check with your local authorities to see if you’ll be breaking any local laws.

Replacing your car’s exhaust system can be expensive and time-consuming if you have to take it to a shop, but you can save money and time by doing it yourself.

The tools you’ll need for your muffler installation are jacks, ratchets of different sizes, and lubrication.

What Does Straight Pipe Exhaust Represent?

Directly from the vehicle’s exhaust headers, a straight pipe exhaust system uses straight pipes that flow to the exhaust tips.

There are no catalytic converters or mufflers in many of these vehicles, so you can hear everything your engine and the back of your car are making.

In the same way, conventional exhaust systems convey exhaust fumes and gases from your engine to the rear of your car; straight pipe exhaust systems do the same.

Straight Pipe Exhaust

As a result, installing your straight pipe exhaust on your car must be done correctly. Installing it correctly is critical; otherwise, your automobile may not be able to clear the toxic gases and fumes created by your engine.

No matter how you decide to set up your straight pipe—doing it yourself or hiring a pro—you must ensure that everything is done correctly.

The Ultimate Comparison: Muffler Delete Vs. Straight Pipe

Most new cars come with a factory-installed muffler to minimize exhaust noise to a minimum. The muffler may be removed, but what about straight pipes? 

Here, we’ll take a closer look at the pros and cons of removing the muffler and using straight pipes.

Sound Enhancement

Removing the muffler or installing a straight pipe will greatly improve the sound. They do this by removing the factory exhaust’s noise-dampening system. “

Muffler Delete:

The muffler may be a nuisance for some car owners. The most common reason for muffler removal is due to this aspect. 

Instead of spending hundreds of dollars on an aftermarket muffler, the only option is to remove the stock muffler.

Straight Pipe:

Loud and aggressive. Adding a straight pipe alteration to a car will louder it. Because of this, you will immediately want to get your hands on it.


Backpressure is the air pressure created by the exhaust if you’re not familiar with the phrase. Improving a vehicle’s performance limits the amount of air that may enter the engine’s combustion chamber.

Remove the muffler:

Exhaust backpressure is a waste of time and money. By removing the muffler, exhaust gases may depart the exhaust pipe more quickly, resulting in less backpressure. The in-car performance will benefit from this beneficial trend.

Straight Pipe:

Exhaust backpressure can be reduced by using straight pipes. The resonator, muffler, and catalytic converters are removed, resulting in less backpressure.

The velocity of exhaust

Exhaust backpressure, as previously established, is the air pressure created by the exhaust. The more backpressure there is, the less efficient the engine will be.

The flow rate of exhaust gases is referred to as exhaust velocity. It aids in improving the overall performance of a vehicle; therefore, the more, the better.

Smaller exhaust pipes allow for a greater increase in exhaust velocity. For example, adding or eliminating the muffler affects the exhaust velocity.

Remove the muffler:

Exhaust velocity is unaffected by removing a muffler. This suggests that the exhaust gas flow can be maintained at its current pace.

Straight Pipe:

Straight pipe, as previously stated, has no effect on exhaust velocity.


It’s possible to obtain a different amount of horsepower from each upgrade. Only about 5 horsepower may be gained from removing your exhaust system. Ten horsepower can be gained by using a straight pipe instead.

Remove the muffler:

In most cases, individuals don’t install a muffler deletion to get more power; rather, they remove it to improve the sound. Muffler deletion has a negligible impact on power output, adding about 5 hp to the car.

You may find that removing the muffler can improve exhaust flow and enhance horsepower if your automobile is at least 20 years old.

muffler delete

Excessive engine backpressure can cause engine damage over time in older automotive mufflers, which are extremely tight.

Straight Pipe:

Your car must be tuned and the fuel injection adjusted to take advantage of straight pipes’ horsepower boost.

Straight pipes are often reserved for auto aficionados who monitor their vehicles for improvements in horsepower.

Straight pipes with the right tune are perfect for this.


With a bigger budget, you may tweak other options such as removing the highest speed restriction, rpm limitation, or completely modifying the engine torque map.

Muffler Delete:

A muffler removal mod does not need an ECU tune to work properly. Contrast this with the Straight Pipes, which require ECU tuning to mute the check engine light and optimize air/fuel combination for maximum horsepower.

The reduction in backpressure that results from removing the muffler is minuscule. Never get your vehicle tuned because you removed the muffler. 

Straight Pipe:

Turning off the check engine light following a straight pipe modification with the right settings is possible. 

Exhaust emissions have an exceptionally high quantity of dangerous compounds, and the check engine light is illuminated.


Weight is a common topic when discussing automotive efficiency. Several car enthusiasts go even farther in terms of weight reduction, going so far as to remove the passenger seats entirely.

Muffler Delete:

A muffler deletion can’t shed more pounds than straight piping can. The catalytic converter is left in place despite the muffler being removed.

Straight Pipe:

The elimination of exhaust system components like mufflers and catalysts makes straight pipes ideal for weight reduction. However, weight reduction is not a concern for most drivers. 



For the most part, the resonator is sufficient for some areas because you still have a working exhaust sound-dampening component in situ.

Straight pipes and muffler removal are both forbidden for street vehicles. They produce a lot of noise and are considerably more dangerous because of their hazardous exhaust.

Muffler Delete:

A muffler is unlawful if it is removed. The loud noise that a muffler deletion makes can get tiresome after a time, and it can also bother those around you. The authorities, in particular.

Straight Pipe:

Loud and aggressive. The straight pipe will increase the volume significantly in a vehicle. You’ll need to verify your city’s noise regulations before purchasing one.


Let’s see how much these exhaust pipe upgrades will set you back. How much would installing these “cool” exhaust systems on your vehicle cost you?

Muffler Delete:

Delete the muffler, and you’ll be surprised at how inexpensive it is. The components typically cost between $50 and $250. Meanwhile, paying a mechanic to complete the work would set you back anywhere from $100 to $200.

Because this mod is prohibited in many areas, finding a mechanic willing to conduct the work is your only option if you want to save money.

Straight Pipe:

However, the price of straight piping is heavily influenced by factors like where you live and the make and model of your automobile.

Installing straight pipe mods might cost anywhere from $1000 to $1500. There is a price to pay if you want titanium alloy exhausts that are more costly.

How to Straight Pipe a Car?

 Using a reciprocating saw and either jack stands or a lift, you’ll be able to remove the damaged panel.

When raising your automobile, make sure to locate the jacking points accurately. Identify the exhaust system pieces that need to be removed after the car is on the lift.


The catalytic converter, mid-pipes, resonator, and muffler will have to be removed. To prepare for your next emissions test, have these items on hand.

You have two options when all of the exhaust components are removed. Installing a bespoke straight-pipe exhaust is an option, or you may keep the car as-is.

The latter is preferable since it will seem and sound more professional. Take the automobile for a spin once you’ve completed your work to check how it sounds. Make sure to keep an ear out for any loose or banging metal in the vehicle.

How Do You Remove a Muffler?

Removing the standard muffler is a breeze instead of installing a straight pipe. However, you still need to use jack stands to raise the car. Only raise up the back because you’re only working on the rear area.

You can note the muffler’s cutoff point when the automobile is raised off of the ground. Use a black marker to indicate the cutting line.

After removing the muffler completely, you may attach a new exhaust pipe. Exhaust tips will be connected by this pipe to your exhaust system. Two metal clamps will hold the pipe in place without welding.

Take the car out for a spin after removing the muffler to see whether it works.

Ensure that the new exhaust pipe is correctly fitted between the tailpipes and the exhaust system. If the clamps are not installed correctly, they may come free.

Straight Pipe vs. Muffler Delete: Horsepower Enhancement

Only a little increase in horsepower may be expected with a muffler deletion (about 5 horsepower). However, straight pipes can provide an additional 10 horsepower.

You must calibrate your vehicle and fine-tune the fuel injection to benefit from straight piping’s increased horsepower. In the tuning comparison, I’ll go into further detail about this.

You don’t remove the muffler as far as horsepower and performance go. There is no perceptible increase in horsepower by removing the muffler.

I got 5 horsepower on the dyno after removing the muffler, and that’s the most I could hope for. Many of the folks I know see no increase in authority.

On the other hand, straight piping is normally done by serious enthusiasts about power improvement and frequently track their vehicles.

Straight piping with a fine-tune is the most logical solution in this circumstance. It’s even more so because it’s only legal on the track and not on the street!


The decision between a muffler deletion and a straight pipe is completely up to the driver. You want to avoid this process. You need to make sure you don’t break any local noise ordinances. Because if you do, the law will come down hard on you.


Is it dangerous for your engine to remove the muffler?

Even if an exhaust leak or rust occurs due to bad welding, a muffler deletion will not affect your car or engine.

Will they void the warranty on your vehicle?

They’ll do it, alas. If you remove the muffler or use straight pipework, your warranty will be void. Every time you change a car, you’re taking a risk.

While most changes can be reversed, these two make it more difficult. Welding all the exhaust system components back on will be necessary to maintain your guarantee.

How much more powerful is a straight pipe?

Adding a straight pipe is definitely a good idea because it reduces the engine’s back pressure and thus increases horsepower.

Allowing the engine to run without backpressure increases both horsepower and torque.

Do these Changes Lead to a Loss of Weight?

Your vehicle’s weight will be reduced by both straight pipes and the removal of the muffler. The catalytic converter, mid-pipes, resonator, and muffler are all deleted in favor of a straight pipe, which saves weight.

The weight of your automobile won’t go down dramatically, though. On average, exhaust systems weigh between 25 and 50 pounds.

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