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Aftermarket exhaust buzzing

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Old Jul 7, 2022 | 01:44 PM
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Mercedes c450
Aftermarket exhaust buzzing
Hey everyone

Installed a f.i. exhaust without any vacuum control with the valve open. Love the upshifts, downshifts and rev match in Sports+. Can feel vibration at low speeds, and feel buzzing when stop n go, is this normal?

Definitely feel like some HP was gained, does the sound change after few days of driving, this is usually the case with after market exhausts.
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Old Jul 7, 2022 | 01:59 PM
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Sounds like your exhaust is resinating, make sure valves are opening and closing completely.
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Old Jul 7, 2022 | 10:50 PM
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Originally Posted by Highline-Autos.com
Sounds like your exhaust is resinating, make sure valves are opening and closing completely.
ResonatIng mr. Sponsor.....Resonating
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Old Jul 10, 2022 | 12:15 AM
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Mercedes c450
vacuum not connected to actuator, so valve is open all the time.

I feel like there is some kind of exhaust sound coming out of speaker.
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