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      03-25-2020, 08:10 PM   #1
Likeanowl
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Hmmm exhaust sounds weird?

I noticed today on start up my exhaust sounded way louder than usual. Almost like I have downpipes on but i don’t. Exhaust is totally stock as of now. As I was driving on the highway it got way louder but then all the sudden it was like something clicked and it got quiet. All I can think is maybe the flaps got stuck? But even with them open before it never sounded quite this loud. Any ideas?
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      03-25-2020, 08:14 PM   #2
deeldoo
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Quote:
Originally Posted by Likeanowl View Post
I noticed today on start up my exhaust sounded way louder than usual. Almost like I have downpipes on but i don’t. Exhaust is totally stock as of now. As I was driving on the highway it got way louder but then all the sudden it was like something clicked and it got quiet. All I can think is maybe the flaps got stuck? But even with them open before it never sounded quite this loud. Any ideas?
Something to do with extended cat heating, your car probably thinks it needs to heat those cats, not sure which sensor handles that but maybe someone can chime in?
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      03-26-2020, 12:06 AM   #3
sicck_m4
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Quote:
Originally Posted by Likeanowl View Post
I noticed today on start up my exhaust sounded way louder than usual. Almost like I have downpipes on but i don’t. Exhaust is totally stock as of now. As I was driving on the highway it got way louder but then all the sudden it was like something clicked and it got quiet. All I can think is maybe the flaps got stuck? But even with them open before it never sounded quite this loud. Any ideas?
Probably one of the valve actuator was stuck at open position.
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      03-28-2020, 02:47 PM   #4
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This happens when the exhaust is cracked. Do u have a mpe? Gets louder one minute the next it shuts off.
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