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Old 11-19-2014, 07:14 PM   #1
McCormack OP
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BMW X1 exhaust, 1 pipe is fake?

I was behind an X1 today and the exhaust looked funny. It has the exhaust exiting from the left side, with two tail pipes showing. However, I could clearly see the pipe on the right ended where it met the muffler, while the one on the left clearly opened into the muffler.

Here's a pic of the arrangement:


A google search isn't bringing up an answer. So are my eyes correct, is one of the tailpipes there just for looks?

This is going to bug me until I find out!
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Old 11-19-2014, 07:21 PM   #2
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Swing by the dealer on your way to work! That Mazda is almost worn out.
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Old 11-19-2014, 07:29 PM   #3
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Swing by the dealer on your way to work! That Mazda is almost worn out.


The Mazda completes me... for now.
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Old 11-19-2014, 07:31 PM   #4
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I wanna like the X1 but there's just something off about it. Maybe it's that fake tailpipe.
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Old 11-19-2014, 08:06 PM   #5
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I am seeing this more on newer stuff. A valve in the exhaust that opens on command. You get one pipe through a nice quiet muffler so it is nice and quiet at idle, but you tromp on it and the bypass opens to give you sound and flow.

Don't pay attention to BMWs. Don't know if that is really the case or not. But it wouldn't surprise me.
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Old 11-19-2014, 08:07 PM   #6
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Your google foo sucks

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Old 11-19-2014, 08:13 PM   #7
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Quote:
Originally Posted by broncobowsher View Post
I am seeing this more on newer stuff. A valve in the exhaust that opens on command. You get one pipe through a nice quiet muffler so it is nice and quiet at idle, but you tromp on it and the bypass opens to give you sound and flow.

Don't pay attention to BMWs. Don't know if that is really the case or not. But it wouldn't surprise me.
I was wondering if it was some sort of valve (perhaps somehow for emissions, which doesn't make sense).
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Old 11-19-2014, 08:14 PM   #8
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Your google foo sucks

Interesting.

From the angle as I sped past the slow poke in the X1, it really looked like a pipe to no where.
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Old 11-19-2014, 08:35 PM   #9
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Is that two pre-cats, a main cat, and a muffler, or two cats, a muffler, and a resonator? Either way, it looks expensive, and I'm surprised that the longer tailpipe from the muffler/resonator has so many welds in it.
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Old 11-19-2014, 09:06 PM   #10
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This is pretty standard for Bimmers - my 325ci has something very similar.

I like the X1 - it is about the right size for me. I would be even more tempted if they would import the X1d
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Old 11-20-2014, 04:27 AM   #11
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Crooked though

Crooked exhaust tips has always been a peeve of mine. Looks like you no longer need to rely on a low rent muffler shop to supply them!
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Old 11-20-2014, 04:58 AM   #12
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Your google foo sucks

Thanks for clearing that up - whew!
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Old 11-20-2014, 05:20 AM   #13
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Thanks for clearing that up - whew!
I don't know. I don't think we have exhausted all the details yet.
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