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      05-31-2023, 01:49 PM   #1
mikerunt
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2016 BMW M4 GTS  [9.64]
OEM Titanium Midpipe

Hey everyone - is this part the stock midpipe that comes on the GTS, but without secondary cats? Is it a M performance upgrade part from what came from the factory on the GTS?

https://www.getbmwparts.com/oem-part...um-18302357917
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      05-31-2023, 03:03 PM   #2
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I think the oem gts midpipe is regular steel
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      05-31-2023, 03:13 PM   #3
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SYT_Shadow I think so also - and I believe it has cats right?
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      05-31-2023, 04:04 PM   #4
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Quote:
Originally Posted by mikerunt View Post
SYT_Shadow I think so also - and I believe it has cats right?
Yes sir
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      05-31-2023, 04:25 PM   #5
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So yeah, I think this is the oem piece but catless and titanium. Must sound nice!
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      05-31-2023, 05:40 PM   #6
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I’d go single mid pipe from Active Autowerke. Really adds to the sound
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      05-31-2023, 07:14 PM   #7
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Quote:
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I’d go single mid pipe from Active Autowerke. Really adds to the sound
You would? I bought one to install in my old CS, but when I saw the quality of the welding I just couldn't do it
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      05-31-2023, 07:24 PM   #8
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I’m wondering if the drawing is showing a flange or a slip style mount. If it’s catless wouldn’t it be a flange to mount up to the down pipes?
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      05-31-2023, 09:07 PM   #9
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Quote:
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You would? I bought one to install in my old CS, but when I saw the quality of the welding I just couldn't do it
Odd. My system was welded flawlessly.
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      05-31-2023, 11:07 PM   #10
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Quote:
Originally Posted by SYT_Shadow View Post
So yeah, I think this is the oem piece but catless and titanium. Must sound nice!
So would installing this throw a CEL? Guessing no because they are secondary cats.
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      05-31-2023, 11:19 PM   #11
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As I understand it any of the pipes thst remove the secondary cats do not throw codes.
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      06-01-2023, 05:48 AM   #12
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There are no sensors in the sec cats, so removal doesn't trigger cels
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      06-20-2023, 02:58 AM   #13
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well shoot...my wallet hates you for this. Anyone grabbed one yet?
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      06-20-2023, 08:01 AM   #14
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I have not - but in looking at this more I do not believe this is the section on the GTS that has the secondary cats.
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      06-20-2023, 03:09 PM   #15
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Quote:
Originally Posted by mikerunt View Post
I have not - but in looking at this more I do not believe this is the section on the GTS that has the secondary cats.
Yea I've been looking into it as well and confirm it bolts up after the secondary cats so it doesn't delete them, only removes the resonator. I believe there may be an equivalent (but non-titanium) m performance part as well. Bummer, I was hoping it would remove the cats
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      06-24-2023, 06:59 AM   #16
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It looks like an M-performance exhaust upgrade mid pipe to me. I didn't know these were made in Ti and/or available to purchase separately.
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