Fake "Dual" Exhaust (Update - JKLOL)

"cazzyodo" (cazzyodo) 04/27/2016 at 09:58 • Filed to: None

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I’m familiar with the concept of dress it up so people think “hey, this looks awesome and shiny!” Take Toyota and Lexus for those little chrome pieces of plastic in cool parallelogram shapes in the rear fender. The little circular exhaust pipe is visible right behind it...but whatever. Exterior looks great to consumers and it’s purely cosmetic so that’s all that matters.

This, however, was new to me.

An X1 was in front of me while I was in traffic yesterday. I noticed something shiny and weird in the pipe when I realized that the one on the right was actually just a piece of pipe leading to the outside of the muffler. Seriously. They (BMW, not the owner) had a “dual” exhaust.

So, yeah. This is apparently a thing.

Update : Thank you ESSSIX GmbH - Accountant/Wagon Thumper for pointing out the butterfly valve. In traffic, this was actually closed hence my thought it was fake. Pretty cool, actually.

Daily Drives a Dragon - One Last Lap > cazzyodo 04/27/2016 at 10:01

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A lot of the Mercedes cars have a pipe just behind the fake tip.

Supreme Chancellor and Glorious Leader SaveTheIntegras > cazzyodo 04/27/2016 at 10:02

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Yeah BMW has been guilty of this for awhile...

BmanUltima's car still hasn't been fixed yet, he'll get on it tomorrow, honest. > cazzyodo 04/27/2016 at 10:03

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That’s what you get for buying the cheapest model in a luxury car lineup. With the X1, you’re paying for the badge.

Bourbon&JellyBeans > cazzyodo 04/27/2016 at 10:05

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The X1 doesn’t deserve its badge, honestly.

ESSSIX GmbH - Accountant/Wagon Thumper > cazzyodo 04/27/2016 at 10:05

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Many BMWs actually have a butterfly valve on the one tip. Never noticed a fake tip yet, but I dont usually check’em out.

m2m, apex detective > BmanUltima's car still hasn't been fixed yet, he'll get on it tomorrow, honest. 04/27/2016 at 10:07

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Keep in mind that the first-generation X1 was based on the 3-series Touring xDrive. So you’re paying for a slightly uglier, slightly higher 3-Series wagon.

BmanUltima's car still hasn't been fixed yet, he'll get on it tomorrow, honest. > m2m, apex detective 04/27/2016 at 10:08

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That’s undergone severe cost cutting measures to make it cheaper.

Tekamul > ESSSIX GmbH - Accountant/Wagon Thumper 04/27/2016 at 10:12

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Yes, I believe that’s the case with the X1. It’s closed at low RPM. I’ve noticed it in traffic, too.

Ash78, voting early and often > cazzyodo 04/27/2016 at 10:14

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This is the second worst thing I've ever heard about the X1, right after the fact that the X1 exists.

Nibby > cazzyodo 04/27/2016 at 10:14

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Just the tip?

Shift24 > cazzyodo 04/27/2016 at 10:15

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Also one of the SUVs (can’t remember which one) has a fake head light and is only there for the dual halo look.

duurtlang > m2m, apex detective 04/27/2016 at 10:18

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Besides uglier and taller the X1 was heavier and smaller too.

Noah - Now with more boost. > cazzyodo 04/27/2016 at 10:18

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lol it’s been a thing since the nineties... most cars you see with two exhaust tips are the exact same way. I can’t speak to other marques but BMW places a valve in the exhaust that opens/closes for a more aggressive sound when you’re driving hard, and to increase back pressure to help the cat warm up when it’s closed.

McMike > ESSSIX GmbH - Accountant/Wagon Thumper 04/27/2016 at 10:21

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I think you might be right.

http://www.bimmerfest.com/forums/showthr…

I would have not expected that in a BMW Forester either.

Party-vi > cazzyodo 04/27/2016 at 10:25

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It’s not fake - it’s a real exhaust tip. For almost two decades BMW’s have used butterfly valves on their single-muffler exhaust systems to 1) decrease exhaust noise at idle and highway speeds while providing a small bump in torque (valve closed) and 2) provide a hint of exhaust note increase as you lay on the gas, as the right exhaust tip bypasses much of the internal exhaust gas routing in the muffler for a faster exit and more exhaust noise. The valve is only open on acceleration, which is why they usually look cleaner/less used than the other tip. Unless you own an older BMW, in which case the valve is pretty much always seized closed. I took my valve off of the E46 and it sounds throaty and burbly at idle, but there is excess noise at highway speed.

Party-vi > cazzyodo 04/27/2016 at 10:28

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Also note a lot of older BMWs used to have true dual exhaust system that exited through one muffler, hence the two tips on the E36, E46, E39, etc.

It seems as if the new turbo-4 models have a single exhaust but still keep the two-tip exit on the X28 models, with a single tip on the bottom-rung X20 models.

GTI Sprinks > Tekamul 04/27/2016 at 10:33

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I’ve seen that as well before and always wondered why. The more ya know.

red014 > cazzyodo 04/27/2016 at 10:34

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Not fake, just very oddly routed. And as someone said, could be butterflied to reduce noise when cruising.

cazzyodo > ESSSIX GmbH - Accountant/Wagon Thumper 04/27/2016 at 10:38

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I think you’re right, actually. McMike’s post of it open made me realize it was just closed while we sat. Pretty cool.

cazzyodo > BmanUltima's car still hasn't been fixed yet, he'll get on it tomorrow, honest. 04/27/2016 at 10:42

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Turns out it was a butterfly valve that shuts in traffic at low rpms. I would not have guessed this would be on the X1. Hell, didn’t even know it was a thing!

functionoverfashion > cazzyodo 04/27/2016 at 10:54

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As you are now aware, that’s a valve, it’s been around at least since the E46 (‘99-06) generation. On my ‘03 it’s a common thing to bypass the valve so it’s always open, and it gives you a slightly deeper exhaust note especially at low RPM where the valve might normally be closed. So anyway....

OpposResidentLexusGuy - USE20, XF20, XU30 and Press Cars > ESSSIX GmbH - Accountant/Wagon Thumper 04/27/2016 at 10:59

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Unrelated.... You're an accountant but what kind? I'm an accountinh student so I must inquire.

cazzyodo > functionoverfashion 04/27/2016 at 11:01

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I know next to nothing of BMW and the way today’s styling goes, that tail pipe kept gnawing on me.

Also, the X1 is such a waste haha.

DipodomysDeserti > cazzyodo 04/27/2016 at 11:01

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I noticed that on an X1 too. Here’s the really weird thing, I have an X1 and both exhaust tips are real.

ESSSIX GmbH - Accountant/Wagon Thumper > cazzyodo 04/27/2016 at 11:13

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Right?! I think its for back pressure.... you know N/A problems lol.

ESSSIX GmbH - Accountant/Wagon Thumper > OpposResidentLexusGuy - USE20, XF20, XU30 and Press Cars 04/27/2016 at 11:15

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Yea, I do small businesses mainly. Everything from payroll to sales tax etc. What year are you in?

OpposResidentLexusGuy - USE20, XF20, XU30 and Press Cars > ESSSIX GmbH - Accountant/Wagon Thumper 04/27/2016 at 11:18

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Junior. Ive got a realllyyyy nice internship for this summer already. Just ready to be done with school and start working.

ESSSIX GmbH - Accountant/Wagon Thumper > OpposResidentLexusGuy - USE20, XF20, XU30 and Press Cars 04/27/2016 at 11:21

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Oh so you’re only on the heavy stuff now. Unless you rationed your core classes. I miss school... you’ll miss it too. Also for the CPA if you do take it follow this order: BEC, FAR, REG, AUD. It’ll save study time since the one before will cover some of the topics of the one following.

OpposResidentLexusGuy - USE20, XF20, XU30 and Press Cars > ESSSIX GmbH - Accountant/Wagon Thumper 04/27/2016 at 11:34

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Sweet. I’m in Acct. 301 which is the weed-out/intense accounting class. I’m working for the largest accounting firm in the world so hopefully I don’t make a fool of myself.

ESSSIX GmbH - Accountant/Wagon Thumper > OpposResidentLexusGuy - USE20, XF20, XU30 and Press Cars 04/27/2016 at 11:47

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Lol I remember those days, I almost didnt make it my self. Also you will make a fool of your self, but know one will expect you to know it all. The best thing I can tell you is focus on understanding the why, and not just how its spelled. I hated going to school for accounting, I felt they didnt give you enough of the big picture, but now, on the other side, I like what I do, and I can see the big picture.

OpposResidentLexusGuy - USE20, XF20, XU30 and Press Cars > ESSSIX GmbH - Accountant/Wagon Thumper 04/27/2016 at 11:49

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I like the profession, I like what I’m doing, now I’m just trying to like the money I’ll be making.

GE90man > cazzyodo 04/27/2016 at 12:05

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I believe the 528i has this feature too

functionoverfashion > cazzyodo 04/27/2016 at 13:03

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Also, the X1 every smallish suv that should just be a wagon is such a waste haha.

There ya go. (I agree!)

cazzyodo > functionoverfashion 04/27/2016 at 13:22

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I go nuts every time I see the Infiniti QXYZRBWTF## whatever.

These things don’t have clearance of SUVs and legitimately ARE wagons. UGHHH

functionoverfashion > cazzyodo 04/27/2016 at 13:51

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Exactly... hence I’m taking very good care of my ‘03 325xi wagon. I think you can get manual 3-series wagons up through 2012 (?) so I’ve got a little while still. My wife so much wants a new XC90 but I’m pushing the V90... we’ll see. Her ‘07 X3 has 170k and drives pretty much like new. So nothing is changing for a while, truth be told.

functionoverfashion > cazzyodo 04/27/2016 at 13:53

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Oh and yes I can’t stand the QWERTY or really anything with almost (or NO) rear window. GAH!

John Dyste > cazzyodo 04/27/2016 at 15:47

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My wife and I have a ‘13 X1. Wish we could have done a 328 touring but the X1 was so much less expensive the 328 wasn’t an option. We were bummed they didn’t come manual (She had an ‘11 328 manual at the time) but the ZF 8 speed is a great trans. We’re are considering doing the Dinan tune to bring us up to 300+HP. If you get a chance to drive one, take it. Yeah they’re a little high up but they still feel a lot like the E91 they’re based on.

I’ve had a love affair with wagons my whole life. Volvo 240, 940, V90, V70XC. The X1 is by far my favorite.

Nauraushaun > cazzyodo 04/28/2016 at 07:27

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Okay so there’s a butterfly valve. But why? Did they really add all this complexity to what could just be a metal tube, so the exhaust note can change a little at certain revs?

It may not be fake. But it’s a fine example of German over-engineering.

pizzaman09 > functionoverfashion 12/31/2016 at 17:50

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My 1999 e36 328is has one of these valves too. It changes the length of the flow path through the muffler based on engine vacuum. Look up ‘golf tee mod’ for BMWs. Makes the car quiet and refined at idle and low load situations, but opens up the valve to give some glorious extra noise at high load levels.