07-20-2020, 06:53 PM | #1 |
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M550 Exhaust Sound
Anyone know why the exhaust sound is louder at start up when engine idles at around 1300 for about 20 seconds, but when I put it in Sport mode and hold the accelerator at 1300, the low tones kick in but it is not as loud ? Is this standard ? Or do I have an exhaust valve problem ? I should add that the car does have the Dinan axle back and mid-pipe .
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07-21-2020, 03:34 AM | #2 | |
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