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  #1  
Old 10-01-2011, 09:29 PM
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Exhaust Popping on Deceleration

I have 700 miles on my X5M, and although I am doing my best to abide by the break-in recommendations, I have noticed when the M button is pressed, I get a popping/burbling sound from the stock exhaust on deceleration. The sound is particularly prevalent when decelerating in 2nd and 3rd gears. Has anyone else experienced this? Am I simply overreacting?

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Old 10-01-2011, 10:00 PM
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is it crackling?
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Old 10-01-2011, 10:05 PM
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normal
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Old 10-01-2011, 10:10 PM
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is it crackling?
Not sure what you mean by crackling and if/how that differs from popping/burbling


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normal
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Old 10-01-2011, 10:14 PM
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She's kinda telling you to open her up...in her own way
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Old 10-02-2011, 12:40 AM
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She's kinda telling you to open her up...in her own way
I agree. I'm gonna go ahead and say this is normal!
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Old 10-02-2011, 03:40 AM
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Originally Posted by JDougM5 View Post
I have 700 miles on my X5M, and although I am doing my best to abide by the break-in recommendations, I have noticed when the M button is pressed, I get a popping/burbling sound from the stock exhaust on deceleration. The sound is particularly prevalent when decelerating in 2nd and 3rd gears. Has anyone else experienced this? Am I simply overreacting?

When I am in M mode. I get a deep pop on the 1-2 shift and the 2-3. I never heard it loud on deceleration. Unless maybe you are at a high RPM and just get off the gas. But it is nothing like the pop on the 1-2/2-3 upshifts
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Old 10-02-2011, 09:55 AM
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If you let off the gas suddenly, the exhaust does give a pop sounds. It's normal. I think it will only do it in sport mode too.
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Old 10-02-2011, 02:36 PM
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Yes, that's simply a bit of unburnt gas igniting in the cats. Stop over-thinking things, it's a great sound.
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Old 10-02-2011, 08:50 PM
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Appreciate the feedback everyone.
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