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      01-25-2020, 04:28 AM   #1
CruiseControl
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Dual Exhaust Active?

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I have a 40i MSport. Does anyone know when or if the second exhaust is active? I can only see activity from one side. Does the second kick-in at any point?
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      01-25-2020, 07:55 AM   #2
DenverMisanthrope
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Quote:
Originally Posted by CruiseControl View Post
I have a 40i MSport. Does anyone know when or if the second exhaust is active? I can only see activity from one side. Does the second kick-in at any point?
Yep, it's normal. The other exhaust only opens when it needs to (i.e. under heavy throttle).

You just need to drive faster at all times.
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      01-25-2020, 08:55 AM   #3
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Quote:
Originally Posted by DenverMisanthrope View Post
Quote:
Originally Posted by CruiseControl View Post
I have a 40i MSport. Does anyone know when or if the second exhaust is active? I can only see activity from one side. Does the second kick-in at any point?
Yep, it's normal. The other exhaust only opens when it needs to (i.e. under heavy throttle).

You just need to drive faster at all times.
That's disappointing! 😉
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      01-25-2020, 11:21 AM   #4
iconoclast
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it can probably be rigged to stay open permanently like other bmw models.
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      01-25-2020, 02:57 PM   #5
CruiseControl
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Does it open when Sport mode is activated?
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      01-25-2020, 10:41 PM   #6
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If you want independent control of the valves, here is a potential option (just need to verify it will work with the B58 in the X7 40i, which it should).....

https://www.cgprecision.com/#!/VSC-1...egory=19266005

I have this on my M3 and it works great.
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