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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 05-14-2014, 10:43 PM
fivemane fivemane is offline
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Exhaust thingy

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Does anyone know the name of this and it's function ?
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  #2  
Old 05-15-2014, 12:22 AM
cvx5832 cvx5832 is online now
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Google "E46 exhaust flap".
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  #3  
Old 05-15-2014, 08:36 AM
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bmw330ci04 bmw330ci04 is offline
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that is the vacuum actuator for the exhaust flap. it closes at a certain speed and opens at a certain RPM (not to mention at idle). a lot of people plug the hose leading to the vacuum thing with a golf tee, keeping the flap stuck open.
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  #4  
Old 05-15-2014, 09:33 AM
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Does anyone know the name of this and it's function ?
Read the E46 Wiki ! (see "Golf-Tee Mod")
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  #5  
Old 05-15-2014, 09:58 AM
Caver Dave Caver Dave is offline
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Originally Posted by Fast Bob View Post
Read the E46 Wiki ! (see "Golf-Tee Mod")
Are you sure about that Bob?
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  #6  
Old 05-15-2014, 01:07 PM
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Originally Posted by Fast Bob View Post
Read the E46 Wiki ! (see "Golf-Tee Mod")
Quote:
Originally Posted by Caver Dave View Post
Are you sure about that Bob?
Yeah, it's not in there. But anybody who's anybody..... err...been on the forum for more than the past few years knows of this mod, and can be quickly found with a search.
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  #7  
Old 05-15-2014, 01:09 PM
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We need somebody to come up with the "flame-thrower" mod for this. Golf tee is cool and all, but not as cool as flames.
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2003 330i TiAg Sport Pkg ~90k miles
DIY MODS: AA Stage I supercharger, Meyle HD FCAs w Powerflex CABs, Bilstein shocks, Meyle HD Rtabs, Angel Eyes, Clear Corners/Markers w/ LEDs, LED tails, ZHP rims, Akebono pads, AUX input
DIY E46 Merit Badges: Sunroof resurrection, CCV, OFHG, VCG w/ VANOS seals, DISA, Cooling Refresh I, steering giubo, window regs, Magnetic Infandibulator (see wiki)
DIY On deck: Rear Diff bushing. UUC SSK, clutch job eventually, Wavetrac LSD
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  #8  
Old 05-15-2014, 08:12 PM
fivemane fivemane is offline
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Where could I find a brand new hose? Mines deteriorating
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  #9  
Old 05-15-2014, 09:36 PM
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Where could I find a brand new hose? Mines deteriorating
For what ? Just cut off the fugly part, and stick a golf tee in the remainder....
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  #10  
Old 05-17-2014, 11:41 AM
fivemane fivemane is offline
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For what ? Just cut off the fugly part, and stick a golf tee in the remainder....
In case i don't want the sound
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  #11  
Old 05-17-2014, 12:13 PM
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In case i don't want the sound
Stop being such an old lady about it....you`ll hardly notice the difference....
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  #12  
Old 05-18-2014, 06:32 PM
fivemane fivemane is offline
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Stop being such an old lady about it....you`ll hardly notice the difference....

I'm noticed my mpg drop significantly
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  #13  
Old 05-18-2014, 06:36 PM
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I'm noticed my mpg drop significantly
Bulldinky....it ain`t happenin`....
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  #14  
Old 05-18-2014, 07:17 PM
fivemane fivemane is offline
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Bulldinky....it ain`t happenin`....

Nah it definitely dropped
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  #15  
Old 05-18-2014, 07:21 PM
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Nah it definitely dropped
PHYSICALLY IMPOSSIBLE ! How are you figuring your mpg ?
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  #16  
Old 05-19-2014, 11:57 AM
fivemane fivemane is offline
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PHYSICALLY IMPOSSIBLE ! How are you figuring your mpg ?

Well I filled her up and drove 30 mins with the hose in and then filled up again and drove down the same route with the hose unplugged ..have about 1/8 less
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  #17  
Old 05-19-2014, 01:44 PM
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Well I filled her up and drove 30 mins with the hose in and then filled up again and drove down the same route with the hose unplugged ..have about 1/8 less
That`s the most unscientific method I ever heard of, and doesn`t mean sh!t....you`re not coming to any realistic conclusion unless you figure out your ACTUAL mpg over a full tank, and do it both ways.
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  #18  
Old 05-19-2014, 06:26 PM
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put a shell sticker on your car, i got 7 more MPG that way
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  #19  
Old 05-19-2014, 07:25 PM
SamxK SamxK is offline
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Originally Posted by fivemane View Post
Well I filled her up and drove 30 mins with the hose in and then filled up again and drove down the same route with the hose unplugged ..have about 1/8 less
Hypothetically speaking, doing the golf-tee mod increases mpg (by the slightest & tiniest bit). The exhaust flap is closed at low RPMs to reduce exhaust tone. Having one flap closed at low RPM restricts airflow. However, having it open all the time will only increase airflow. No restrictions in air flow means running more efficiently. Tt makes the car sound better too!

The reason why your mpg went down is probably because you encountered slight traffic (more frequent stops) compared to your first run. Our guys here don't lie and wouldn't lie. What's the point of doing that anyways?
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  #20  
Old 05-19-2014, 09:48 PM
fivemane fivemane is offline
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Originally Posted by SamxK View Post
Hypothetically speaking, doing the golf-tee mod increases mpg (by the slightest & tiniest bit). The exhaust flap is closed at low RPMs to reduce exhaust tone. Having one flap closed at low RPM restricts airflow. However, having it open all the time will only increase airflow. No restrictions in air flow means running more efficiently. Tt makes the car sound better too!



The reason why your mpg went down is probably because you encountered slight traffic (more frequent stops) compared to your first run. Our guys here don't lie and wouldn't lie. What's the point of doing that anyways?

Should I just leave it plugged in since I'm stopping and going ?
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  #21  
Old 05-19-2014, 09:56 PM
SamxK SamxK is offline
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Should I just leave it plugged in since I'm stopping and going ?
I'd leave it unplugged or do the "golf-tee mod" to keep the flap open. When you take off at low RPMs, it makes your car tone sound deeper like you have a real nice exhaust. Will have absolutely no negative effects to your car. I promise
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  #22  
Old 05-26-2014, 10:21 AM
fivemane fivemane is offline
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I'd leave it unplugged or do the "golf-tee mod" to keep the flap open. When you take off at low RPMs, it makes your car tone sound deeper like you have a real nice exhaust. Will have absolutely no negative effects to your car. I promise
Could it :do a muffler delete and keep the golf tee thing
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  #23  
Old 05-26-2014, 10:26 AM
fivemane fivemane is offline
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Originally Posted by SamxK View Post
I'd leave it unplugged or do the "golf-tee mod" to keep the flap open. When you take off at low RPMs, it makes your car tone sound deeper like you have a real nice exhaust. Will have absolutely no negative effects to your car. I promise
Could it :do a muffler delete and keep the golf tee thing
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  #24  
Old 05-26-2014, 11:27 AM
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Could it :do a muffler delete and keep the golf tee thing
Are you insane ???

Why do you keep obsessing over that lousy little flap ????

Move ON with your life !
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  #25  
Old 05-26-2014, 05:57 PM
fivemane fivemane is offline
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Are you insane ???



Why do you keep obsessing over that lousy little flap ????



Move ON with your life !

:[ because I like the option of driving quietly
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