Remove a Muffler....Yikes?! - BMW Forum - BimmerWerkz.com
3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

Reply
 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 02-24-2009, 01:39 PM
n00b
 
Skywagon's Avatar
 
Join Date: Feb 2009
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Skywagon is on a distinguished road
(Thread Starter)
Remove a Muffler....Yikes?!

At the risk of being spanked by the purists, and yes I looked a lot through this website before posting this, has anyone considered simply removing the forward muffler on their 328i? I have a 2009 E90 which is way too quiet. The exhaust options are numerous and some very costly. Why not take it to a muffler shop and simply install a custom made piece of pipe in the forward muffler's place. Perhaps it would confuse the emissions computer?
Thanks much
Skywagon is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 02-24-2009, 02:33 PM
Help from over the pond
 
marti5's Avatar
 
Join Date: Sep 2008
Location: IPSWICH. U.K.
Posts: 3,242
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
marti5 is on a distinguished road
Hmmm...Try it out and take it for an emmissions test, would be interesting to see what happens, I suppose you could design it so the muffler is easy to replace again.

The thing is you dont really want to lose any back pressure.

VELVET BLUE UK INDIVIDUAL , IM THE LAST
UNITED WE STAND DIVIDED WE FALL

I stepped in a plate of Pasta the other day - now I have to worry about my Carbonara footprint!
marti5 is offline  
#3 (permalink) Old 02-24-2009, 03:58 PM
4th Gear Member
 
bimmerguy82's Avatar
 
Join Date: Mar 2005
Location: City of Rain, PNW
Posts: 884
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
bimmerguy82 has a reputation beyond repute bimmerguy82 has a reputation beyond repute bimmerguy82 has a reputation beyond repute bimmerguy82 has a reputation beyond repute bimmerguy82 has a reputation beyond repute bimmerguy82 has a reputation beyond repute bimmerguy82 has a reputation beyond repute bimmerguy82 has a reputation beyond repute bimmerguy82 has a reputation beyond repute bimmerguy82 has a reputation beyond repute bimmerguy82 has a reputation beyond repute
Send a message via MSN to bimmerguy82
Quote:
Originally Posted by Skywagon View Post
At the risk of being spanked by the purists, and yes I looked a lot through this website before posting this, has anyone considered simply removing the forward muffler on their 328i? I have a 2009 E90 which is way too quiet. The exhaust options are numerous and some very costly. Why not take it to a muffler shop and simply install a custom made piece of pipe in the forward muffler's place. Perhaps it would confuse the emissions computer?
Thanks much
It's not a muffler, but a resonator. I think you have two of them. You can remove them safely without messing up emissions or back pressure. Just have a shop weld in some straight pipe.

You probably won't get a big sound difference without changing the muffler itself. That's what a muffler does, it muffles the sound.

BMWcrazy
___________
-Joshua



|AA stage 1 software| UUC light flywheel and clutch| UUC EVO 3 ssk | K&N Intake | Ebay Headers |

BMWCCA member#407674

Founding member of the hit 145 mph in my almost stock 325i BMW club.
bimmerguy82 is offline  
#4 (permalink) Old 02-24-2009, 04:57 PM
n00b
 
Skywagon's Avatar
 
Join Date: Feb 2009
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Skywagon is on a distinguished road
(Thread Starter)
Bimmerguy,
I just spent a little time laying on my back looking under the car. I was starting to think the "resonator" was perhaps a catalytic converter. I'd wager a little difference would be realized by removing it. Do you know where the catalytic converter is? It's got to be upstream of the resonator. Just took delivery last night, got a lot to learn. And, sir, I know what a muffler does. Thanks
Skywagon is offline  
#5 (permalink) Old 02-24-2009, 05:54 PM
Im Bluffin With My Muffin
 
AlpineSixAndSeven's Avatar
 
Join Date: Nov 2006
Location: Palo Alto, CA
Posts: 5,992
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold
Send a message via AIM to AlpineSixAndSeven
^ just replace your muffler(the last chunky looking thing) with a magniflow muffler any exhaust shop could do this...

1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded
I am Captain Obvious
AlpineSixAndSeven is offline  
#6 (permalink) Old 02-24-2009, 06:55 PM
2nd Gear Member
 
Steve323i99's Avatar
 
Join Date: Oct 2008
Location: Ft. Lewis, WA
Posts: 526
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Steve323i99 is on a distinguished road
Quote:
Originally Posted by Skywagon View Post
Bimmerguy,
I just spent a little time laying on my back looking under the car. I was starting to think the "resonator" was perhaps a catalytic converter. I'd wager a little difference would be realized by removing it. Do you know where the catalytic converter is? It's got to be upstream of the resonator. Just took delivery last night, got a lot to learn. And, sir, I know what a muffler does. Thanks
There are two I beleive attached to the down pipes from the headers, right before the bolted section that goes to the first resonator, very front most part of the exhaust syestem, you can't see them unless you are sitting right underneith the car and looking up under the enigne.

You can pretty much remove everything from that bloted secion back and throw on a Magnaflow or such muffler. It all depends on what sound you want to produce. There are a bunch of thread of a couple of guys doing this over at BimmerFest. "Smolck" did just the second resonator with a magnaflow muffler I believe, and SlimKim did both resonators, I don't know what exhaust he used. There are vids with sound clips from both of them.
Any exhaust shop can cut the resonators off and replace with straight pipe and install what ever muffler your looking to put on. Unless you gotz mad welding skilz.

UUC TSE3 | ST V1 coilovers | TMS sways | CSL replicas 18"x8.5" | ATE slotted rotors w/ Axxis USP | Clear lights all around

Last edited by Steve323i99; 02-24-2009 at 06:57 PM.
Steve323i99 is offline  
#7 (permalink) Old 02-24-2009, 07:00 PM
n00b
 
Skywagon's Avatar
 
Join Date: Feb 2009
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Skywagon is on a distinguished road
(Thread Starter)
Alpine,
Easier said than done. I've spent hours on the internet looking for a muffler or system that fits a plane vanilla 2009 328i E90. There are only two. One is from BMW $1449. The other goes into production tomorrow at Magnaflow. Just got off the phone with Gary in R&D at Magnaflow and he says call him back in about a week. No idea of cost yet, it is a catback system. Please, someone, make me into a liar.
Skywagon is offline  
#8 (permalink) Old 02-24-2009, 07:33 PM
n00b
 
Skywagon's Avatar
 
Join Date: Feb 2009
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Skywagon is on a distinguished road
(Thread Starter)
Steve,
Thanks. Going to Bimmerfest looking for "Smolck"
Skywagon is offline  
#9 (permalink) Old 02-24-2009, 08:24 PM
2nd Gear Member
 
Steve323i99's Avatar
 
Join Date: Oct 2008
Location: Ft. Lewis, WA
Posts: 526
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Steve323i99 is on a distinguished road
Actually I just realized that you have an E90, His is an E46.. sorry maybe his work will still give you ideas though.

UUC TSE3 | ST V1 coilovers | TMS sways | CSL replicas 18"x8.5" | ATE slotted rotors w/ Axxis USP | Clear lights all around
Steve323i99 is offline  
#10 (permalink) Old 02-25-2009, 02:33 AM
Im Bluffin With My Muffin
 
AlpineSixAndSeven's Avatar
 
Join Date: Nov 2006
Location: Palo Alto, CA
Posts: 5,992
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold
Send a message via AIM to AlpineSixAndSeven
just weld on one of manginflows universalto replace the last muffler and exhaust shop can do it ther like 100-150 a piece depending on the size and tip(s)

1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded
I am Captain Obvious
AlpineSixAndSeven is offline  
#11 (permalink) Old 02-25-2009, 04:39 PM
n00b
 
Skywagon's Avatar
 
Join Date: Feb 2009
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Skywagon is on a distinguished road
(Thread Starter)
Alpine,
I looked at Magnaflow's web site and saw nothing that I thought would work without a ton of welding and modifications. So, I went to my BMW dealer and popped for their system. $1449. plus another hundred in small parts and still don't know how much the install will run. The 2009's are, according to their parts folks, are somewhat different than the 08's. Again, I've spent a ton of time on the net looking around. Magnaflow's will be cheaper I bet but it just went into production today.
Skywagon is offline  
#12 (permalink) Old 02-28-2009, 12:36 AM
n00b
 
Join Date: Feb 2009
Location: Scranton, Pa.
Posts: 35
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
will3hawks is on a distinguished road
exhaust replacement

Why do you want a noiser car? You may well find out (like the motorcycle crowd) that often times more noise equals less horsepower. If you MUST make more noise, save your money and invest in a Remus system which will not result in less performance.
will3hawks is offline  
#13 (permalink) Old 02-28-2009, 12:40 AM
OMFG another one!?
 
witeshark's Avatar
 
Join Date: Aug 2004
Location: Miami FL
Posts: 14,700
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice
Noise does waste energy, very true!

BMW

Sig by zeaq
witeshark is offline  
#14 (permalink) Old 02-28-2009, 01:18 AM
Im Bluffin With My Muffin
 
AlpineSixAndSeven's Avatar
 
Join Date: Nov 2006
Location: Palo Alto, CA
Posts: 5,992
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold
Send a message via AIM to AlpineSixAndSeven
Quote:
Originally Posted by Skywagon View Post
Alpine,
I looked at Magnaflow's web site and saw nothing that I thought would work without a ton of welding and modifications. So, I went to my BMW dealer and popped for their system. $1449. plus another hundred in small parts and still don't know how much the install will run. The 2009's are, according to their parts folks, are somewhat different than the 08's. Again, I've spent a ton of time on the net looking around. Magnaflow's will be cheaper I bet but it just went into production today.
Actually it is just cut and bend a pipe(to get the tip at the proper angle). simple ANY exhaust shop could do this in like an hour or 2.... all well whatever

1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded
I am Captain Obvious
AlpineSixAndSeven is offline  
#15 (permalink) Old 02-28-2009, 07:54 AM
n00b
 
Skywagon's Avatar
 
Join Date: Feb 2009
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Skywagon is on a distinguished road
(Thread Starter)
Will3hawks,
I don't want a noisy car, I just want to be able to hear the engine. When I was shopping I drove a M3, had a quality subdued tone to it. Also, I seriously doubt the BMW engineers would design a system that would reduce power. If less back pressure robbed an engine of HP why would all racing cars have essentially straight, non restricted, exhausts?
Skywagon is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E46, E90)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Changing Spark Plugs....yikes! nerf26 5-Series (E12,E28, E34, E39, E60) 5 10-08-2004 02:23 PM
Yikes...2.5 Quarts Low frank3 3-Series (E36) 5 10-05-2004 06:55 PM
Yikes!!! bstaudt 5-Series (E12,E28, E34, E39, E60) 5 09-14-2004 05:56 PM
YIKES!!! DON'T SKATEBOARD!! floydzeppelinfan Video Vault 3 07-29-2004 06:18 PM
MUFFLER--- BmwRacing 3-Series (E36) 7 04-14-2004 10:00 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome