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      10-04-2011, 10:45 AM   #23
Franklin Joseph
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Quote:
Originally Posted by MDORPHN View Post
You go first and tell me how it works out!

BTW, will you be at Oktoberfest next week?

Neil

unfortunately i wont be at Oktoberfest.
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      10-04-2011, 10:51 AM   #24
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Originally Posted by Papethova View Post
I had straight (mid)pipes on my 135... secondary cat and resonator delete. Not sure id maddad had a resonator in there. I plan on trying that set up with the stock axle back.

It wont be a straight bolt on though since my mids are 2 separate pipes.
Here is what my MadDad looks like relative to stock, deletes the secondary cats and resonator, but adds 2 tiny 'resonators' midstream to eliminate drone.

http://farm5.static.flickr.com/4072/...f504db7138.jpg
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      10-04-2011, 11:15 AM   #25
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Quote:
Originally Posted by ///M1 View Post
Here is what my MadDad looks like relative to stock, deletes the secondary cats and resonator, but adds 2 tiny 'resonators' midstream to eliminate drone.

http://farm5.static.flickr.com/4072/...f504db7138.jpg
Thanks I had actually just googled it. Mine is similar except its two individual pipes with no resonator at all just straight pipe.

If the M axleback has one "inlet" then I need a Y pipe like the maddad before it will bolt up.
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      10-04-2011, 11:24 AM   #26
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Quote:
Originally Posted by Papethova View Post
Thanks I had actually just googled it. Mine is similar except its two individual pipes with no resonator at all just straight pipe.

If the M axleback has one "inlet" then I need a Y pipe like the maddad before it will bolt up.

Pretty sure the 1M OE exhaust mid pipe ends in a single outlet - where it bolts to the back muffler. Here is my pic of the Akrapovic exhaust:
Attached Images
  
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      10-04-2011, 12:41 PM   #27
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if I understood it correctly, there are 3 sections after the Downpipes.
Mid-pipe(s) containing the secondary cats
center muffler where 2 pipes go into 1
rear muffler
see the pictures of the Eisenmann exhaust here http://www.eisenmann.com.au/products/233/377/

they offer these 3 sections.
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      10-04-2011, 12:44 PM   #28
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Quote:
Originally Posted by Dackelone View Post
Pretty sure the 1M OE exhaust mid pipe ends in a single outlet - where it bolts to the back muffler.
It does.
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      10-04-2011, 12:51 PM   #29
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Was just looking at all this this morning. The OEM setup is two pieces from down pipes back. The Meisterschaft I had installed this morning was three pieces, Mid Pipe, Connector from Mid Pipe to Exhaust and then Exhaust. Ill try to have pictures and reviews up by the end of the week.
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      10-04-2011, 12:58 PM   #30
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here a picture of the Berk midpipe


I am confused now about what Eisenmann exactly is offering
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      10-04-2011, 01:20 PM   #31
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Quote:
Originally Posted by marcel b View Post
here a picture of the Berk midpipe


I am confused now about what Eisenmann exactly is offering
Mine is like that except dual all the way through. Ill have to modify it to work with the stock M axleback.
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      10-04-2011, 01:23 PM   #32
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Originally Posted by Papethova View Post
Mine is like that except dual all the way through. Ill have to modify it to work with the stock M axleback.
HP Autowerks wrote that they took the midpipe of the 135. Maybe a difference between N54/N55 version of the 135
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      10-04-2011, 01:31 PM   #33
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Quote:
Originally Posted by marcel b View Post
HP Autowerks wrote that they took the midpipe of the 135. Maybe a difference between N54/N55 version of the 135
Sorry, maybe I didnt clarify. I had an aftermarket exhaust on the 135. The midpipe was replaced and I am going to test that piece with the stock M axelback before I start looking into a complete exhaust system.

The rear section of the M seems to have minimal restriction, the mids seem to be identical to the 1 series so I expect to see gains in power and sound. My 135 was borderline too loud and I anticipate the M with my mids in place to be similar if not identical.

My 135 is N54 BTW
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      10-04-2011, 01:44 PM   #34
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Quote:
Originally Posted by marcel b View Post
if I understood it correctly, there are 3 sections after the Downpipes.
Mid-pipe(s) containing the secondary cats
center muffler where 2 pipes go into 1
rear muffler
see the pictures of the Eisenmann exhaust here http://www.eisenmann.com.au/products/233/377/

they offer these 3 sections.

Three basic parts yes.

1). Cat(s)/Down pipe(s) N54, or one single cat/down pipe for the N55.
2). Mid-pipe(s) containing the secondary cats N54 (N55 no secondary cats).
3). Rear muffler.
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      10-04-2011, 02:00 PM   #35
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Quote:
Originally Posted by tkbr0wn View Post
Was just looking at all this this morning. The OEM setup is two pieces from down pipes back. The Meisterschaft I had installed this morning was three pieces, Mid Pipe, Connector from Mid Pipe to Exhaust and then Exhaust. Ill try to have pictures and reviews up by the end of the week.
Oh man, looking forward to this review.
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      10-05-2011, 08:44 AM   #36
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Re: N55 midpipe

I'm intrigued by using the N55 midpipe, but wondering whether there will be any clearance problems between the M3-sourced rear subframe on our 1Ms and the resonator at the rear end of the N55 midpipe.

Thoughts?

Neil

Last edited by MDORPHN; 10-05-2011 at 09:07 AM.
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      10-05-2011, 10:45 AM   #37
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Quote:
Originally Posted by MDORPHN View Post
I'm intrigued by using the N55 midpipe, but wondering whether there will be any clearance problems between the M3-sourced rear subframe on our 1Ms and the resonator at the rear end of the N55 midpipe.

Thoughts?

Neil
I wouldn't think so. I had the M3 suframe bushings on my 135i and granted, didn't have an N55 midpipe, but no issues with either the stock midpipe nor the MadDad.

Is the resonator at the end of the N55 really that much bigger than the N54? The bushings didn't seem to be bigger, it was just their construction thwat was different IIRC.
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      10-05-2011, 11:55 AM   #38
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Quote:
Originally Posted by ///M1 View Post
I wouldn't think so. I had the M3 suframe bushings on my 135i and granted, didn't have an N55 midpipe, but no issues with either the stock midpipe nor the MadDad.

Is the resonator at the end of the N55 really that much bigger than the N54? The bushings didn't seem to be bigger, it was just their construction thwat was different IIRC.
I believe that it's differently configured than the N54 resonator.

And, it's just not the subframe bushings; the 1M has an entirely different subframe and diff than the 135i. As you know, it's off of the E9x M3.

Neil

Last edited by MDORPHN; 10-05-2011 at 12:04 PM. Reason: spelling
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      10-05-2011, 11:28 PM   #39
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I'm thinking about changing to a mid pipe like the one manufactured by maddad until I have a chance to see/hear some full exhaust options in person. Anyone else or opinions?
We did it first back in May after picking up the 1M:

http://www.1addicts.com/forums/showt...light=mid-pipe


Along with a video/sound clip:

http://www.1addicts.com/forums/showt...light=mid-pipe
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      10-06-2011, 07:56 AM   #40
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Quote:
Originally Posted by MDORPHN View Post
I believe that it's differently configured than the N54 resonator.

And, it's just not the subframe bushings; the 1M has an entirely different subframe and diff than the 135i. As you know, it's off of the E9x M3.

Neil
Based on pix in HP Autowerks separate thread on the Berk Technology midpipe, it would appear that there's plenty of room to accomodate the stock N55 midpipe.

Might just have to consider picking one up.

Neil
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      10-09-2011, 12:58 PM   #41
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I have an N55 midpipe available to ship. 5 days used, mint.

PM me for info.
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      10-09-2011, 06:41 PM   #42
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Quote:
Originally Posted by MDORPHN View Post
I'm intrigued by using the N55 midpipe, but wondering whether there will be any clearance problems between the M3-sourced rear subframe on our 1Ms and the resonator at the rear end of the N55 midpipe.

Thoughts?

Neil
N55 mid pipe will be a direct replacement for the N54T/1M mid pipe.
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