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09-17-2019, 12:32 PM | #1 |
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Help with e92 m3
I wanted to learn how to work on my car so I took my exhaust off and reinstalled it (since I'm planning on getting a new exhaust in the future). And when I put it back on it is much louder than before. I think the sound is coming from one of the cats, but I'm confused because the pipe is connected and clamped down.
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09-17-2019, 12:47 PM | #2 |
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So, what all did you take off? Full exhaust, or just back half? Hear any leaks in a certain area other than "maybe a cat"? Did you remove o2 sensors from the bungs?
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09-17-2019, 01:11 PM | #3 |
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If its by the cats I would check that flange to make sure its seated correctly. Also make sure the donut gasket is still there and not damaged.
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09-17-2019, 01:49 PM | #4 | |
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09-17-2019, 01:50 PM | #5 | ||
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09-18-2019, 07:12 AM | #6 |
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I agree, bought my car with 48k and when i took apart the exhaust, the gasket just kinda crumbled. Check the seating and gaskets, dont see any other reasons why it would be louder after reassembly.
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