While the popular Sea Foam treatment won’t clean your catalytic converter, it treats the problems prior to that which cause the converter to get clogged up in the first place. At the very least, you’ll give your fuel injectors and combustion chamber a good cleaning.

Let’s dive right in.

1. Apply an Epoxy Bond. If the hole is small enough, you can use epoxy to seal the leak.
2. Wrap it with Exhaust Tape. An exhaust tape is an ideal solution if you are dealing with a larger hole.
3. Use an Exhaust Clamp.
4. Cover the Hole with an Aluminum Patch.

Usually, this type of repair will run between two and three hours. Most independent shops charge around $80 to $90 an hour, so it should cost between $160 and $270 in labor. At a dealership, with a labor rate of approximately $110 an hour, you can expect a labor bill of between $220 and $330.

You will find that gutting a catalytic converter without removing it is a good option. This ensures that you’re able to bypass the device without giving yourself away. Nevertheless, it can be tough to gut the converter than it is to remove it. You’ll also need a few tools.

Drilling holes in your exhaust will definitely make your car louder. By doing so, you allow some sound waves to escape before they are silenced by the muffler. It’s important to drill holes at the right location to prevent damage to the car.

Does Leaking Exhaust Affect Performance? It is true that if your exhaust pipe has a hole or a leak, your engine performance will be affected. If the exhaust has a hole in it, the system will be rendered less efficient and more vulnerable. One of the tell-tale signs of an exhaust pipe hole is extremely loud noises.

An exhaust leak on an NA car will will not cause any loss in horsepower. It will only cause the car to sound louder.