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Debris in brand new Stillen catback?

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Old Feb 14, 2022 | 09:30 PM
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mhamby96
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From: Cayce, SC
Debris in brand new Stillen catback?

Hi all, purchased the Stillen catback online from redline360 for my sedan, upon opening it, I immediately noticed what appears to be a combination of metal shavings, dust, & a black residue within the pipes? All the components are like this. If I run my finger around the diameter of the pipes there is a heavy amount of debris on it. Also I don't have a picture of it, but the bar welded to the y pipe is also off center at a weird angle & the internal pipe on the right side has a noticeable dent right before it splits where it is welded in....I'm trying to figure out if this is normal for these exhausts or if anyone else's Stillen looks like this? I'm a tad irritated having spent $1500+ dollars on an exhaust system that has such obvious flaws right out of the box. Any feedback helps. Thanks
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Old Feb 14, 2022 | 10:40 PM
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SonicVQ
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With a cat back exhaust, if doesn't matter what is in it... after all it is after the cat and the first WOT pull will clean it out
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Old Feb 14, 2022 | 11:25 PM
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mhamby96
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From: Cayce, SC
Originally Posted by SonicVQ
With a cat back exhaust, if doesn't matter what is in it... after all it is after the cat and the first WOT pull will clean it out
That's relieving, thank you. Only other concern I have is the internal dent where the y pipe splits, it's maybe a cm at most but I'm worried it could cause turbulence or a similar issue. MotorvateDYI from YouTube said his did not have any such "features". Should I be concerned about that or is a defect on the inside of the piping not going to make a difference in the exhaust's performance?
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Old Feb 14, 2022 | 11:56 PM
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Originally Posted by mhamby96
That's relieving, thank you. Only other concern I have is the internal dent where the y pipe splits, it's maybe a cm at most but I'm worried it could cause turbulence or a similar issue. MotorvateDYI from YouTube said his did not have any such "features". Should I be concerned about that or is a defect on the inside of the piping not going to make a difference in the exhaust's performance?
I don't think there will be any noticeable difference in performance... Don't sweat it... just enjoy the sound of your new exhaust.
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Old Feb 15, 2022 | 12:07 AM
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mhamby96
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From: Cayce, SC
Originally Posted by SonicVQ
I don't think there will be any noticeable difference in performance... Don't sweat it... just enjoy the sound of your new exhaust.
Motorvate seconded your reply in our YT conversation, so I feel reassured about the exhaust now lol. Thanks for your help.
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Old Feb 15, 2022 | 09:26 AM
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So those pipes are raw steel. Those spots are dew/moisture that collected internally and stayed in the pipe and rusted it.
Nothing else would create this so far down into the pipe, once it finishes rusting since there is no more moisture that rust starts to dust up.
No real concerns.
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Old Feb 15, 2022 | 10:38 AM
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mhamby96
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From: Cayce, SC
Originally Posted by BULL
So those pipes are raw steel. Those spots are dew/moisture that collected internally and stayed in the pipe and rusted it.
Nothing else would create this so far down into the pipe, once it finishes rusting since there is no more moisture that rust starts to dust up.
No real concerns.
Ah, that makes sense. I was wondering how said debris ended up throughout the entire length of every pipe. I'll be sure to do a few solid highway pulls after it's installed to clear the system out. Thanks for the help.
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Old Feb 15, 2022 | 01:15 PM
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Originally Posted by mhamby96
Ah, that makes sense. I was wondering how said debris ended up throughout the entire length of every pipe. I'll be sure to do a few solid highway pulls after it's installed to clear the system out. Thanks for the help.
You're not gonna be clearing anything out, you're going to be adding carbon soot and gas to it. But again no concerns.
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Old Feb 15, 2022 | 04:26 PM
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From: Cayce, SC
Originally Posted by BULL
You're not gonna be clearing anything out, you're going to be adding carbon soot and gas to it. But again no concerns.
Got it, at least I'll be able to get a good listen in on the exhaust note at WOT in that case
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