BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      01-08-2013, 02:36 PM   #45
Artemis
Brigadier General
 
Artemis's Avatar
 
Drives: 1M (VO)
Join Date: Jun 2011
Location: Belgium

Posts: 3,204
iTrader: (0)

Quote:
Originally Posted by 011100001 View Post
^ Well I think I'm going to just modify my N54 Mids and see how they sound... The cost of that would be far less then buying new mids and/or buying N55 mids.
Please elaborate. IMHO it is better to steer clear from a cut-and-weld operation re the N54 mids (removal of the secondary cats), if that's what you plan to do.

Got to check the exact price, but from recollection, for the price of one set of N54 mids you can buy 4 or 5 sets of N55 mids. The reason: secondary cats ain't cheap. Don't castrate those dangly bits. Save yourself the hassle, install N55 mids (moreover it's an OEM BMW part) and keep the stock N54 mids for future re-installation purposes (you might be required to re-install N54 mids on resale day - buying those will hurt your wallet). N55 mids are also cheaper than Maddad mids.
__________________
“For ’tis the mind that makes the body rich” (W. Shakespeare, The Taming of the Shrew, Act 4, Scene 3)
Artemis is offline   Belgium
0
Reply With Quote
      01-08-2013, 02:44 PM   #46
Stan.mac
Second Lieutenant
 
Stan.mac's Avatar
 
Drives: 135i M-Sport
Join Date: Aug 2012
Location: NoVA

Posts: 297
iTrader: (3)

Quote:
Originally Posted by Artemis View Post
Please elaborate. IMHO it is better to steer clear from a cut-and-weld operation re the N54 mids (removal of the secondary cats), if that's what you plan to do.

Got to check the exact price, but from recollection, for the price of one set of N54 mids you can buy 4 or 5 sets of N55 mids. The reason: secondary cats ain't cheap. Don't castrate those dangly bits. Save yourself the hassle, install N55 mids (moreover it's an OEM BMW part) and keep the stock N54 mids for future re-installation purposes (you might be required to re-install N54 mids on resale day - buying those will hurt your wallet). N55 mids are also cheaper than Maddad mids.
TRACKING ... I have to look in to the price on the N55 Mids; I made a premature statement based on the idea that everything BMW sells is expensive as hell. I'm getting ready to put Cat-less DP's on, and I'm currently rocking the Berk Race axle back (which I hate); so I'm thinking about doing a custom MP or the N55 mid if the price is reasonable.
Stan.mac is offline  
0
Reply With Quote
      01-08-2013, 02:47 PM   #47
Dackelone
Moderator
 
Dackelone's Avatar
 
Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany

Posts: 16,013
iTrader: (1)

Quote:
Originally Posted by 011100001 View Post
TRACKING ... I have to look in to the price on the N55 Mids; I made a premature statement based on the idea that everything that BMW sells is expensive as hell. I'm getting ready to put Cat-less DP's on, and I'm currently rocking the Berk Race axle back (which I hate); so I'm thinking about doing a custom MP or the N55 mid if the price is reasonable.
Almost two years ago when I bought my N55 mids they were 330 euros from my Germany dealer(w/o tax). When the 2011's N55 cars came out the N55 mids were over 400 euros. I think they are now under 300 euros for the N55 mids. You should get new front and rear exhaust gaskets and those bolts/springs - just to be safe when doing your install. That will add about another 60 euros in hardware and gaskets.

The 1M mid pipe with secondary cats is over 2,100 euros!
Dackelone is offline   Germany
0
Reply With Quote
      01-08-2013, 03:06 PM   #48
Stan.mac
Second Lieutenant
 
Stan.mac's Avatar
 
Drives: 135i M-Sport
Join Date: Aug 2012
Location: NoVA

Posts: 297
iTrader: (3)

Quote:
Originally Posted by Dackelone View Post
The 1M mid pipe with secondary cats is over 2,100 euros!
for a stock exhaust... WTF! At that rate I'll have to start selling blood to break 400WHP! lol jkjk
Stan.mac is offline  
0
Reply With Quote
      01-08-2013, 03:09 PM   #49
Dackelone
Moderator
 
Dackelone's Avatar
 
Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany

Posts: 16,013
iTrader: (1)

Quote:
Originally Posted by 011100001 View Post
for a stock exhaust... WTF! At that rate I'll have to start selling blood to break 400WHP! lol jkjk
That is only for the stock 1M mid pipes! The entire exhaust will cost you much more!!


Yea... buy some N55 mid pipes.
Dackelone is offline   Germany
0
Reply With Quote
      01-08-2013, 03:21 PM   #50
Stan.mac
Second Lieutenant
 
Stan.mac's Avatar
 
Drives: 135i M-Sport
Join Date: Aug 2012
Location: NoVA

Posts: 297
iTrader: (3)

Quote:
Originally Posted by Dackelone View Post
That is only for the stock 1M mid pipes! The entire exhaust will cost you much more!!


Yea... buy some N55 mid pipes.
I think I will; I'll keep my eyes peeled on ebay and craigstlist before I go to the stealership though...
Stan.mac is offline  
0
Reply With Quote
      01-08-2013, 04:11 PM   #51
Artemis
Brigadier General
 
Artemis's Avatar
 
Drives: 1M (VO)
Join Date: Jun 2011
Location: Belgium

Posts: 3,204
iTrader: (0)

Quote:
Originally Posted by 011100001 View Post
TRACKING ... I have to look in to the price on the N55 Mids; I made a premature statement based on the idea that everything BMW sells is expensive as hell. I'm getting ready to put Cat-less DP's on, and I'm currently rocking the Berk Race axle back (which I hate); so I'm thinking about doing a custom MP or the N55 mid if the price is reasonable.
See these threads:
http://www.1addicts.com/forums/showthread.php?t=651547
http://www.1addicts.com/forums/showthread.php?t=662265
http://www.1addicts.com/forums/showthread.php?t=709182
http://www.1addicts.com/forums/showthread.php?t=677414

N55 (no secondary cats) = BMW part # 18307599743
For the OEM bolts and gaskets part #, see these earlier posts of Dackel:
http://www.1addicts.com/forums/showp...02&postcount=8
http://www.1addicts.com/forums/showp...1&postcount=16

Call around for the N55 midpipes because some sellers over-charge. Normal price is sub $400.

N55 (left) versus N54 midpipes (right):
Name:  N55_N54_Midpipes.jpg
Views: 747
Size:  92.0 KB

If you also change downpipes, the ECU will throw codes at you (detecting the absence of primary cats) which you need to deal with (no such thing if you only change mids) + might result into undesirable results (too loud, too smelly, trouble with authorities and neighbors). See for example:
http://www.1addicts.com/forums/showthread.php?t=787223
__________________
“For ’tis the mind that makes the body rich” (W. Shakespeare, The Taming of the Shrew, Act 4, Scene 3)
Artemis is offline   Belgium
0
Reply With Quote
      01-08-2013, 04:14 PM   #52
Stan.mac
Second Lieutenant
 
Stan.mac's Avatar
 
Drives: 135i M-Sport
Join Date: Aug 2012
Location: NoVA

Posts: 297
iTrader: (3)

^ I just picked up the CP-e DP fix today. Trust me I've been doing a little research on the whole DP thing...
Stan.mac is offline  
0
Reply With Quote
      01-08-2013, 04:53 PM   #53
Dackelone
Moderator
 
Dackelone's Avatar
 
Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany

Posts: 16,013
iTrader: (1)

Arrow original 1M mid pipe dummy resonator...

I think I found a pic(s) of the factory 1M mid pipe resonator cut open. Like my German buddy told me... he sold his OE 1M mid pipe to a guy wanting a louder exhaust... so he cut open the resonator and was going to make a "straight pipe". But to his surprise... THAT is exactly what BMW had already done! So now we know why the stock exhaust drones a little bit!


Here are the pics I found on the web...
Name:  Midpipe-Mittelschalldaempfer-Original-BMW-N55-N54-135i-1M-High-Flow-Version_b3.jpg
Views: 750
Size:  123.1 KB

Name:  Midpipe-Mittelschalldaempfer-Original-BMW-N55-N54-135i-1M-High-Flow-Version_b2.jpg
Views: 753
Size:  93.2 KB
Dackelone is offline   Germany
0
Reply With Quote
      01-08-2013, 05:04 PM   #54
ozinaldo
Brigadier General
 
ozinaldo's Avatar
 
Drives: 1M
Join Date: Jan 2011
Location: Chile, Santiago

Posts: 3,045
iTrader: (0)

That's a one hairy resonator Dack! What was BMW thinking, Hobbit?

Quote:
Originally Posted by Dackelone View Post
I think I found a pic(s) of the factory 1M mid pipe resonator cut open. Like my German buddy told me... he sold his OE 1M mid pipe to a guy wanting a louder exhaust... so he cut open the resonator and was going to make a "straight pipe". But to his surprise... THAT is exactly what BMW had already done! So now we know why the stock exhaust drones a little bit!


Here are the pics I found on the web...
__________________
"The mark of a great car is one whose overall competence exceeds what you should expect from its individual components and the 1M does just that", Chris Harris.
BMW 1M-SOLD-: TECH: Evolve Race+N55mids, Evolve IC, Michelin PSS, ER cp, aFe filter, CDVx, Vorshlag camber plates, BMS OCC EXTERIOR: trunk spoiler, blacklines, black grills, IND goodies INTERIOR: Alcantara steering wheel, steel pedals, custom mats, MPower e-brake.
ozinaldo is offline   Chile
0
Reply With Quote
      01-08-2013, 06:36 PM   #55
Artemis
Brigadier General
 
Artemis's Avatar
 
Drives: 1M (VO)
Join Date: Jun 2011
Location: Belgium

Posts: 3,204
iTrader: (0)

Quote:
Originally Posted by Dackelone View Post
So now we know why the stock exhaust drones a little bit!
Quote:
Originally Posted by ozinaldo View Post
That's a one hairy resonator Dack! What was BMW thinking, Hobbit?
Amazing, BMW got us blonde poodles inside our 1M resonators.

Actually, matches well with the "BMW Performance VO Steering Wheel Winter Cover".

Name:  VO_SteeringWheel.jpg
Views: 749
Size:  23.5 KB
__________________
“For ’tis the mind that makes the body rich” (W. Shakespeare, The Taming of the Shrew, Act 4, Scene 3)
Artemis is offline   Belgium
0
Reply With Quote
      01-09-2013, 10:45 PM   #56
Em/1
First Lieutenant
 
Em/1's Avatar
 
Drives: 2011 1M VO
Join Date: Dec 2011
Location: Chicago

Posts: 334
iTrader: (0)

Garage List
2004 Jaguar XJ8  [0.00]
2011 BMW 1M  [0.00]
2011 VW GTI  [0.00]
Quote:
Originally Posted by Artemis View Post
Amazing, BMW got us blonde poodles inside our 1M resonators.

Actually, matches well with the "BMW Performance VO Steering Wheel Winter Cover".

Attachment 804685
Hilarious!
Em/1 is offline   United_States
0
Reply With Quote
      01-10-2013, 12:46 AM   #57
flzrider
Captain
 
Drives: AW 1M
Join Date: Oct 2005
Location: Miami, FL

Posts: 640
iTrader: (1)

Quote:
Originally Posted by Dackelone View Post
I think I found a pic(s) of the factory 1M mid pipe resonator cut open. Like my German buddy told me... he sold his OE 1M mid pipe to a guy wanting a louder exhaust... so he cut open the resonator and was going to make a "straight pipe". But to his surprise... THAT is exactly what BMW had already done! So now we know why the stock exhaust drones a little bit!
Great pics, Dack.

Have we confirmed if either the non-M N54 midpipes or the N55 midpipes have similar resonator construction?
__________________
flzrider is offline  
0
Reply With Quote
      01-10-2013, 07:39 AM   #58
Dackelone
Moderator
 
Dackelone's Avatar
 
Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany

Posts: 16,013
iTrader: (1)

Quote:
Originally Posted by flzrider View Post
Great pics, Dack.

Have we confirmed if either the non-M N54 midpipes or the N55 midpipes have similar resonator construction?
I have not seen anyone posting pics like that to confirm. But I did take a picture of the INSIDE of my N55 mid pipe resonator... and the inner pipe did have perforation holes drilled into the inner pipe of the resonator.

IF anyone wants to cut up their stock n54 resonator... I would love to see whats inside the can/box!


Here is a pic of my N55 mid pipe...
Name:  n55 mid pipes IMG_4405.jpg
Views: 685
Size:  96.4 KB
Dackelone is offline   Germany
0
Reply With Quote
      01-10-2013, 11:02 AM   #59
Stan.mac
Second Lieutenant
 
Stan.mac's Avatar
 
Drives: 135i M-Sport
Join Date: Aug 2012
Location: NoVA

Posts: 297
iTrader: (3)

I will once I get a hold of a N55 Mid-Pipe... Does anyone have a N55 mp laying around?
__________________
"I live my life a quarter mile at a time. Nothing else matters: not the mortgage, not the store, not my team and all their bullshit. For those ten seconds or less, I'm free."
afe DCI/Greddy Oil Catch Can/Catless DP/ Cobb Stage 2+/Berk Axle-Back(Race)/AAW CP w BOV/H&R Springs/ ALPINA Flash/Helix FMIC/
Stan.mac is offline  
0
Reply With Quote
      01-10-2013, 02:07 PM   #60
flzrider
Captain
 
Drives: AW 1M
Join Date: Oct 2005
Location: Miami, FL

Posts: 640
iTrader: (1)

Quote:
Originally Posted by Dackelone View Post
I have not seen anyone posting pics like that to confirm. But I did take a picture of the INSIDE of my N55 mid pipe resonator... and the inner pipe did have perforation holes drilled into the inner pipe of the resonator.

IF anyone wants to cut up their stock n54 resonator... I would love to see whats inside the can/box!


Here is a pic of my N55 mid pipe...
Based on that picture it seems likely that the N55 midpipe is a traditional resonator, which would make sense seeing as how it cures the drone issue on the 1M (plus a small bump in HP due to the lack of cats).

Great work as always, Dack!
__________________
flzrider is offline  
0
Reply With Quote
      10-04-2013, 06:47 AM   #61
meng4n1to
Private
 
meng4n1to's Avatar
 
Drives: BMW 135i Coupe
Join Date: Apr 2011
Location: Johannesburg, South Africa

Posts: 64
iTrader: (0)

Send a message via Skype™ to meng4n1to
Just had my N54 midpipe replaced under motorplan due to loose cats inside the housing.

The midpipe alone without the gaskets and labour cost R36000.00 ($3606,84)
__________________
N54 Powered
meng4n1to is offline   South Africa
0
Reply With Quote
      04-25-2014, 01:14 PM   #62
keithbickford
New Member
 
Drives: 2011 BMW 135i M-Sport DCT
Join Date: Feb 2014
Location: United States

Posts: 27
iTrader: (0)

Quote:
Originally Posted by Smiley1175 View Post
I removed one restriction but added in another.
I don't believe a perforated pipe would add restriction. If anything, it would act as a hemholtz resonator and smooth out the exhaust pulse and dampen the soundwave, but without adding restriction.
keithbickford is offline   United_States
0
Reply With Quote
      04-25-2014, 04:07 PM   #63
keithbickford
New Member
 
Drives: 2011 BMW 135i M-Sport DCT
Join Date: Feb 2014
Location: United States

Posts: 27
iTrader: (0)

Quote:
Originally Posted by Dackelone View Post
I think I found a pic(s) of the factory 1M mid pipe resonator cut open. Like my German buddy told me... he sold his OE 1M mid pipe to a guy wanting a louder exhaust... so he cut open the resonator and was going to make a "straight pipe". But to his surprise... THAT is exactly what BMW had already done! So now we know why the stock exhaust drones a little bit!


Here are the pics I found on the web...
Attachment 804646

Attachment 804647
I wish we could find out who took these photos. If you look closely at the pipe in the smaller chamber, it looks like a hack weld job of a band covering where perforated holes may have existed, as seen in photos of unmodified 135i resonators. Are we certain this is a stock unmodified resonator? In the days of cutting costs, it seems odd that BMW would go through the extra work and expense of making a dummy resonator, especially when they offer an performance exhaust system for the 135i that has a y pipe in place of the resonator.
keithbickford is offline   United_States
0
Reply With Quote
      04-25-2014, 05:31 PM   #64
Dackelone
Moderator
 
Dackelone's Avatar
 
Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany

Posts: 16,013
iTrader: (1)

Quote:
Originally Posted by keithbickford View Post
I wish we could find out who took these photos. If you look closely at the pipe in the smaller chamber, it looks like a hack weld job of a band covering where perforated holes may have existed, as seen in photos of unmodified 135i resonators. Are we certain this is a stock unmodified resonator? In the days of cutting costs, it seems odd that BMW would go through the extra work and expense of making a dummy resonator, especially when they offer an performance exhaust system for the 135i that has a y pipe in place of the resonator.
I know who took them: the friend of MY friend, that's who. Yes, I am certain it's a legit photo.

But hey.... why not take off your factory mid pipe and cut it apart? Then you will know for sure.



Only cars to get a "different" exhaust are the cars built for the Chinese market. Those car's get a quieter exhaust and only two of the four tail pipes really work. The other two are "dummies". There was an old thread when the 1M first came out how the inner(?) exhaust pipes were clean while the outer ones were dirty on Chinese market cars.


Dack
Dackelone is offline   Germany
0
Reply With Quote
      04-26-2014, 01:40 AM   #65
Zuzu
Major General
 
Zuzu's Avatar
 
Drives: VO 1M Beast
Join Date: Mar 2008
Location: SyDnEy Oz

Posts: 7,521
iTrader: (0)

Quote:
Originally Posted by keithbickford View Post
I wish we could find out who took these photos. If you look closely at the pipe in the smaller chamber, it looks like a hack weld job of a band covering where perforated holes may have existed, as seen in photos of unmodified 135i resonators. Are we certain this is a stock unmodified resonator? In the days of cutting costs, it seems odd that BMW would go through the extra work and expense of making a dummy resonator, especially when they offer an performance exhaust system for the 135i that has a y pipe in place of the resonator.
Photos are legit..

Place a 135i/N54 mid pipe alongside a 1M mid pipe and shine a torch in the resonator exit..

No rocket science needed here, the difference is quiet obvious.
__________________
ZUZETTE Build..http://www.1addicts.com/forums/showthread.php?t=606023
COBB tune . ETS FMIC . aFe CAI . Meisterschaft GT exhaust . SSK . Custom Midpipes . CDV . BM OCC . H&R springs :
Zuzu is offline   Australia
0
Reply With Quote
      04-29-2014, 12:54 PM   #66
keithbickford
New Member
 
Drives: 2011 BMW 135i M-Sport DCT
Join Date: Feb 2014
Location: United States

Posts: 27
iTrader: (0)

Was there a pun in "quiet obvious"
In seeing the photos of all the variations, It seems they all have an internal Y pipe, but the non 1M cars have perforations in the collector to allow resonances to dissipate into the wool, whereas the 1M has the same Y pipe without perforations. The question is whether allowing the resonances to be absorbed into the wool actually limits power in any way. It seems to me that it would be effective at reducing resonance (drone) but not rob power.

Last edited by keithbickford; 04-29-2014 at 01:00 PM.
keithbickford is offline   United_States
0
Reply With Quote
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Forum Jump


All times are GMT -5. The time now is 04:28 PM.




1addicts
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST