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  #1  
Old 12-14-2010, 04:50 PM
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New x5 and exhaust only comes out on one side?

Is this normal? Is this something to do with the cold weather here in Minneapolis? I called my dealer and they said a flap oplen only past 4k rpms. I saw a couple of acura and lexus suvs and the exhaust was coming out of both sides. I also saw another x5 on the way to work and his left one was only working also. Just wondering if anyone knows anything about this? Thanks!
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  #2  
Old 12-14-2010, 05:34 PM
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On the 35i X5, only the left side exhaust is open up to higher rpms. Your dealer said 4K rpms--I agree with them. Don't know about the 35d or the 50i.

That way you only have to keep one side clean unless you stand on it a lot.
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Old 12-14-2010, 11:29 PM
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I didn't know this. I have a '08 3.0si and I thought both exhausts worked no matter the rpm.
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Old 12-14-2010, 11:57 PM
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Quote:
Originally Posted by autoque View Post
I didn't know this. I have a '08 3.0si and I thought both exhausts worked no matter the rpm.
Both exhausts work on teh 30. This change was made when the indroduced the 35i
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Old 12-15-2010, 12:17 AM
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Yep; only my left one was smoking this morning (20 degrees) and I wondered the same thing.
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  #6  
Old 12-15-2010, 12:06 PM
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My 2007 335i behaved the same way. There were various explanations about it allowing the engine to warm up better, and there was a "hack" to open both of them up all the time. I tried the hack and it might have had a bit more growl at low rpms, but overall it wasn't a big deal. As for the tailpipes, both of them got equally dirty on my 335i despite one not being open quite as often.
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Old 12-15-2010, 01:19 PM
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I will do the hack, heck, with vapor coming out only in one pipe, it looks retarded and to others, you got a bad right pipe.
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Old 12-15-2010, 03:28 PM
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I will bring it to my guy who did some of my mods on my 335xi. He said its a easy fit so I will get this taken care of. Still dont know why all other SUVs have them both working.
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Old 12-15-2010, 04:21 PM
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Originally Posted by BMWX522 View Post
Still dont know why all other SUVs have them both working.
It's cheaper to just have them both "working" under all conditions.
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Old 12-15-2010, 09:24 PM
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What do you do to get thme both to work?
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