[blackdog2222]

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 .

[SXY550]

Originally Posted by blackdog2222

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 .

Pretty sure your car was in cold start mode when you started your car, hence the louder tone. It's normal

[640ibimmerguy]

Any video of the exhaust sound? Not at start up but would like to hear the dinan set up.