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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > iCarbon N55 Downpipe Review



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      11-16-2010, 02:48 PM   #23
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Quote:
Originally Posted by Matt@Camber-Toe View Post
the biggest thing is where it connects to the exhaust. that big of a pipe will not clear the cross bracket on an xi model...its identical to the AR pipe.

It looks good, but i would increase the opening on the turbine outlet flange. Its the same size as stock and that is one source of the problem.
What problem?
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      11-16-2010, 03:09 PM   #24
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Is this available already? How much?
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      11-16-2010, 03:24 PM   #25
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Is this available already? How much?
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      11-16-2010, 03:29 PM   #26
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not available yet. Here's the link to the group buy for more info:

http://www.e90post.com/forums/showthread.php?t=455010
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      11-16-2010, 03:37 PM   #27
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Quote:
Originally Posted by I335 View Post
How can you make it any bigger than what it's connected to - you've got to match the size at some point?
I think he was trying to say that they should make a 4 inch exhaust that connects to complete the whole package perhaps.

It would be the most beneficial as opposed to going from a 4 inch pipe to a 3 inch to whatever stock bottle neck is.
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      11-16-2010, 03:46 PM   #28
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Is there anyway you can make a quick video of the exhaust sound while revving and at idle??
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      11-16-2010, 04:02 PM   #29
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Quote:
Originally Posted by e92sport View Post
Is there anyway you can make a quick video of the exhaust sound while revving and at idle??
It's already out.
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      11-16-2010, 04:02 PM   #30
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Looks good, however, I remember AR posting a catless dp for the n55 a month or two ago.
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      11-16-2010, 04:16 PM   #31
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Any more info about that carbon fiber intake that was mentioned ? Any links ?
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      11-17-2010, 09:28 AM   #32
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Quote:
Originally Posted by e92sport View Post
Is this available already? How much?
Yeah it is available. HP Autowerks is holding an introductory Group Buy for it right now. They stated that the production for the first 50 sets is pretty much done.

Quote:
Originally Posted by Alpine 335i View Post
Looks good, however, I remember AR posting a catless dp for the n55 a month or two ago.
While AR had announced a DP a couple months ago, I believe they never fully released it. It's still in development or something. This one is already good to go.
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      11-17-2010, 09:31 AM   #33
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Can't hardly wait for the $200 Raceland version to come out and the place goes into an uproar over it.
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      11-17-2010, 10:23 AM   #34
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Can't hardly wait for the $200 Raceland version to come out and the place goes into an uproar over it.
It will. But after they've probably purchased it from this company or maybe AR and then just make a replica. So their cost is strictly manufacturing and no R&D. Steal!
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      11-17-2010, 11:18 AM   #35
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Does this fit on x-drive equipped e90's?
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      11-17-2010, 02:42 PM   #36
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Quote:
Originally Posted by Tarthuss View Post
It will. But after they've probably purchased it from this company or maybe AR and then just make a replica. So their cost is strictly manufacturing and no R&D. Steal!
I actually emailed raceland about an n55 downpipe and this was their response:
"At this time we don't have anything in development, but we will put your recommendation on the list so upper management can consider producing this item. Please keep in mind once the decision is made it would take up to another year for the product to be introduced to the market."

The introductory price on the iCarbon pipe isn't so bad anyway and the quality looks great.
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      11-17-2010, 02:47 PM   #37
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I put this on my wish list for xmas from my GF :woot:
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      11-17-2010, 07:40 PM   #38
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I put this on my wish list for xmas from my GF :woot:
That's a great GF!
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      11-17-2010, 08:21 PM   #39
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That N55 sounds super nice for still having the OEM catback...I thought for sure it was fully catless...kinda shocked it was stock catback.
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      11-17-2010, 08:28 PM   #40
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Quote:
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That N55 sounds super nice for still having the OEM catback...I thought for sure it was fully catless...kinda shocked it was stock catback.
it IS fully catless; the n55 135i doesn't have the secondary cats the n54 exhausts have.

Last edited by bryce; 11-18-2010 at 08:42 AM.
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      11-17-2010, 10:10 PM   #41
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HMMMM...

fit e90 xi?
and my car had secondary cats, i cut them jokers out, they were occupying too much room :0)....so i wonder if thats what my car will sound like regardless...
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      11-17-2010, 10:34 PM   #42
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Very nice!! I'm sure the N55 guys are excited; one step closer to catching up to us N54 guys.
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      11-17-2010, 11:14 PM   #43
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Very nice!! I'm sure the N55 guys are excited; one step closer to catching up to us N54 guys.
it's safe to say the n55 is a different beast.
it's exciting to have progress.
thanks for the little knock.
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      11-18-2010, 11:01 AM   #44
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Quote:
Originally Posted by I335 View Post
How can you make it any bigger than what it's connected to - you've got to match the size at some point?
If you take a look at AR designs N55 pipe, the inside diameter is a LOT bigger than this one.
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