Q&A for How to Replace a Muffler

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Is there any welding involved? Is it easy for a 17-year-old to do?

Community Answer

Most modern mufflers use one of two types of fittings. The most common for OEM is clamped, as shown in the article. Aftermarket mufflers (universal ones) may need a flange welded on if it is a catback system, as an exhaust shop will generally break the long pipe down into smaller parts. Aftermarket exhausts made for your vehicle, however, should either bolt straight on or slide on.

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Question

Which way does the inlet go, toward the engine?

Uglymug18

Community Answer

The inlet always faces the engine; that's the side the gases are coming into.

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Question

How can I tell if I put my muffler on backwards?

Uglymug18

Community Answer

Most aftermarket mufflers have an arrow stamped on them showing the flow direction. In other cases, one side will say "inlet" or "outlet."

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Question

How do I diagnose a bad exhaust system?

Community Answer

Most of the time you can hear if the exhaust is coming our somewhere other than the end, but you can always go under the car and inspect the exhaust to see if there are any holes.

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Question

Is it illegal to remove my muffler in Singapore?

Community Answer

Yes, it is illegal to remove your muffler. Therefore, there will be consequences if you are caught with no muffler on your vehicle.

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Question

Do I need to cut off the resonantors in order to install the muffler?

Community Answer

No. The OEM muffler should unbolt from the rest of the exhaust system without any extra cutting required and the new one should bolt in just the same way.

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