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      06-24-2021, 03:11 PM   #1
M2RAW
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People who install their Fabspeed sportcat downpipe

I bought my fabspeed sportcat used and doesn't come with any hardware. Do I need any hardware to install it or just reused the stock ones? Im pairing it with MPE By the way.

Thanks in advance.
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      06-24-2021, 03:37 PM   #2
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I just re-used my stock hardware at first. But I was changing it out regularly so I eventually just bought a second lower v-clamp which makes it way easier to swap. When I was re-using the hardware I would be bleeding afterwards. Pretty sharp metal gasket on the lower side.
I found it helped to spread the old lower clamp using a threaded rod and a couple nuts/washers to force spread it open a bit. Then it makes putting the lower one back on much easier. Top clamp I leave hanging on the turbo side. Top one flex’s much easier.
That lower clamp assembly (comes with the metal gasket) is expensive.
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      06-24-2021, 03:44 PM   #3
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Quote:
Originally Posted by Drop the hammer View Post
I just re-used my stock hardware at first. But I was changing it out regularly so I eventually just bought a second lower v-clamp which makes it way easier to swap. When I was re-using the hardware I would be bleeding afterwards. Pretty sharp metal gasket on the lower side.
I found it helped to spread the old lower clamp using a threaded rod and a couple nuts/washers to force spread it open a bit. Then it makes putting the lower one back on much easier. Top clamp I leave hanging on the turbo side. Top one flex’s much easier.
That lower clamp assembly (comes with the metal gasket) is expensive.
Thanks man! Do you have a link for that v clamp? You only change the bottom?
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      06-24-2021, 03:48 PM   #4
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You technically need new vband clamps and gasket
Screw clamp 1 18307606136
Gasket ring 1 18307581970
Screw clamp 1 18307620349

you also technically need to replace the belly pan bolts since they are torque to yield and thus one time use.
33326768354
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      06-24-2021, 03:48 PM   #5
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I don’t have link. I just asked for it at my local bmw dealership. Yes I just bought the lower one.
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      06-24-2021, 03:53 PM   #6
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Quote:
Originally Posted by nioh_lbbm2 View Post
You technically need new vband clamps and gasket
Screw clamp 1 18307606136
Gasket ring 1 18307581970
Screw clamp 1 18307620349

you also technically need to replace the belly pan bolts since they are torque to yield and thus one time use.
33326768354
Is it necessary though? Is it gonna have leaks if I reused the oem ones?
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      06-24-2021, 04:26 PM   #7
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I re-used mine for a couple years and no leaks. There is potential to wreck the gaskets I suppose.
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      06-24-2021, 04:37 PM   #8
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Quote:
Originally Posted by M2RAW View Post
Is it necessary though? Is it gonna have leaks if I reused the oem ones?
Many people have reused the parts. Its your call. Sounds like you want to save a couple bucks so just reuse.


All I'm telling you is that the BMW/ISTA technical document says to replace the parts which makes sense considering what gaskets/clamps do to form a seal. You might even mangle them upon uninstallation. Like the commenter above said.
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      06-24-2021, 05:05 PM   #9
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Quote:
Originally Posted by nioh_lbbm2 View Post
Quote:
Originally Posted by M2RAW View Post
Is it necessary though? Is it gonna have leaks if I reused the oem ones?
Many people have reused the parts. Its your call. Sounds like you want to save a couple bucks so just reuse.


All I'm telling you is that the BMW/ISTA technical document says to replace the parts which makes sense considering what gaskets/clamps do to form a seal. You might even mangle them upon uninstallation. Like the commenter above said.
Yea and also I want to install them already lol
Thanks btw
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      06-24-2021, 10:27 PM   #10
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Quote:
Originally Posted by nioh_lbbm2 View Post
Quote:
Originally Posted by M2RAW View Post
Is it necessary though? Is it gonna have leaks if I reused the oem ones?
Many people have reused the parts. Its your call. Sounds like you want to save a couple bucks so just reuse.


All I'm telling you is that the BMW/ISTA technical document says to replace the parts which makes sense considering what gaskets/clamps do to form a seal. You might even mangle them upon uninstallation. Like the commenter above said.
So the part numbers that you commented is basically the same with oem ones? Or bigger?
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      06-25-2021, 07:44 AM   #11
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Quote:
Originally Posted by nioh_lbbm2 View Post
You might even mangle them upon uninstallation.
Good point.
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      06-25-2021, 04:31 PM   #12
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Quote:
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So the part numbers that you commented is basically the same with oem ones? Or bigger?
those are the oem part numbers for the N55 M2
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