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      10-26-2011, 02:25 PM   #1
997Houston
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1M Midpipes

Anyone have thoughts on why a Berk or MadDad mid pipe would be better than a N55 mid pipe which appears to be a less expensive alternative. All eliminate the secondary cats and the pics I've seen of the N55 resonator looks pretty unrestricted.

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      10-26-2011, 02:27 PM   #2
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+1 on the N55 mid pipe.
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      10-26-2011, 02:54 PM   #3
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do it...then let me know how it is...i'm still on the fence on this.
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      10-26-2011, 03:04 PM   #4
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Friend of mine did the BERK Mids
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      10-26-2011, 03:14 PM   #5
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I'm trying to decide as well...
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      10-26-2011, 03:20 PM   #6
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Seems that most of the restriction is on the cats -- so any of the three options (N55, MadDad, Berk) will likely get the lion's share of flow.

That being said, there may be some advantage to Berk's (and maybe MadDad's though I haven't analyzed theirs too closely) pipes having two straight resonators instead of the N55's one. How much more restriction that gets rid of is anyone's guess. Seems like it would be minimal...
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Last edited by icabod7; 10-26-2011 at 04:26 PM..
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      10-26-2011, 03:27 PM   #7
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I've been considering this too. I like the idea of the N55 pipes from the stanpoint they look BMW factory installed and less of an 'OH WOW' if I ever need to take the car in for service. Also how do you plan to circumvent the O2 error codes?
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      10-26-2011, 03:32 PM   #8
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There wont be any 02 error codes from what I understand.
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      10-26-2011, 03:40 PM   #9
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Quote:
Originally Posted by icabod7 View Post
There wont be any 02 error codes from what I understand.
Correct. It's replacement of the downpipes, not the mid-pipes, that would trigger error codes.

Also agree that the stock N55 midpipe is far less likely to attract unwanted attention by a dealer.

Neil
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      10-26-2011, 03:45 PM   #10
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Quote:
Originally Posted by MDORPHN View Post
Correct. It's replacement of the downpipes, not the mid-pipes, that would trigger error codes.

Also agree that the stock N55 midpipe is far less likely to attract unwanted attention by a dealer.

Neil
Neil, which did u decide on?
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      10-26-2011, 03:59 PM   #11
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Quote:
Originally Posted by MDORPHN View Post
Correct. It's replacement of the downpipes, not the mid-pipes, that would trigger error codes.

Also agree that the stock N55 midpipe is far less likely to attract unwanted attention by a dealer.

Neil
You're right, mea culpa

Ya'll were saying mid pipes but the brain was thinking down pipes. So the N55 midpipes are catless and there are no O2 sensors that need to be connected to secondary cats in our cars. What's the cost of a set of N55 pipes?

I wonder what would be more effective in reducing backpressure, a set of 3" catless down pipes or N55 (or sim) midpipes? Wouldn't be able to do both and still pass emissions. Not having to jigger with fooling the car into thinking the downpipe cats are there is def. an advantage to the midpipe route.

Oh, and I think I have all this right now. If I'm off base someome edjumicate me please!
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      10-26-2011, 04:02 PM   #12
Franklin Joseph
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Berk is $599 plus shipping and the N55 midpipe (from Tischer) is $338 plus shipping.
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      10-26-2011, 04:16 PM   #13
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Quote:
Originally Posted by Franklin Joseph View Post
Berk is $599 plus shipping and the N55 midpipe (from Tischer) is $338 plus shipping.
Can anyone tell me why the 1M mids are $100 less than the 135i mids?

Aren't they similar fitment?

http://www.berktechnology.com/produc...nated-midpipes
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      10-26-2011, 04:16 PM   #14
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How hard would it be to do a secondary cat delete for a good muffler shop?
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      10-26-2011, 04:17 PM   #15
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1M and 135 Midpipes are identical fitment wise...
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      10-26-2011, 04:20 PM   #16
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Quote:
Originally Posted by tkbr0wn View Post
1M and 135 Midpipes are identical fitment wise...
Sneaky...
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      10-26-2011, 06:47 PM   #17
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I was able to pick up an Agency Power race mid pipe out of our classifieds two months ago.

I am eager to get the car from PCD (11/11) and slap it on.

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      10-26-2011, 06:50 PM   #18
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I have the Berk and love it. Highly recommend.
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      10-26-2011, 08:32 PM   #19
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N55 Fit Perfectly !
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      10-26-2011, 09:25 PM   #20
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Quote:
Originally Posted by carchrism5 View Post
I have the Berk and love it. Highly recommend.
What do you have it mated up to just stock muffler? Give some impressions please! Sound, spool-up etc.
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      10-26-2011, 10:23 PM   #21
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N55 135i OEM on my 1M
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      10-26-2011, 11:00 PM   #22
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Quote:
Originally Posted by Sal@AUTOcouture View Post
N55 135i OEM on my 1M
Sorry for newbie question, but what does it do?
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