C-Class (W204) 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI

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Old Dec 17, 2013 | 03:07 PM
  #1  
jason91193's Avatar
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From: Fresno, California
2010 Mercedes C300 Sport, 2005 BMW 645ci, 2013 Hyundai Veloster Turbo, 1998 Porsche 911 Turbo
OBX Headers

Hi, I know this has came up before, but i would like to ask if this brand is any good, or since it been out for a long time, some of us might have tried it. Is there any feedback or recommendations on headers and maybe downpipes for our car?
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Old Jan 16, 2014 | 08:39 PM
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W204Man's Avatar
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08 C-Class (sold)
Im also looking at buying them. But if I do install them will deleting the first cat add much HP?
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Old Jan 16, 2014 | 10:06 PM
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w204_Generic's Avatar
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From: Tampa, Florida
2011 C300 4Matic Sport
Originally Posted by W204Man
Im also looking at buying them. But if I do install them will deleting the first cat add much HP?
Deleting the primary cats adds between 15-25 Horsepower.
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Old Jan 16, 2014 | 10:20 PM
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W204Man's Avatar
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08 C-Class (sold)
Originally Posted by w204_Generic
Deleting the primary cats adds between 15-25 Horsepower.
Wow I was not expecting that much. I was guessing 5 maybe 10 hp. Other than throwing a code, emissions test, and louder will I have any other problems? And the biggest of all will it damage my engine?
Thanks for the help w204_Generic
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Old Jan 16, 2014 | 10:25 PM
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From: Tampa, Florida
2011 C300 4Matic Sport
Originally Posted by W204Man

Wow I was not expecting that much. I was guessing 5 maybe 10 hp. Other than throwing a code, emissions test, and louder will I have any other problems? And the biggest of all will it damage my engine?
Thanks for the help w204_Generic
I believe that's for the secondary cats. More along the lines with 5 horsepower though.

As for damaging you engine, it honestly cannot. Cats actually put more stress on the engine as the exhaust is more restrictive to come out. Taking these restrictive devices out help take off the restriction so your car can finally breathe, due to a more free flowing exhaust.

The only downsides/problems to this is:

1. A possible fuel smell. (However, I only smell the fuel on initial startup, after that is goes away. This is with the secondary cats still on though, you only really smell it of you have absolutely no cats)

2. Soot on the inside of your exhaust tips(easily cleanable, but gets annoying to wipe repeatedly.

Last edited by w204_Generic; Jan 16, 2014 at 10:43 PM.
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Old Jan 17, 2014 | 01:36 AM
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2010 C200 CGI
Generally OBX products don't have the best quality so it's a crap shoot. If you're deleting your primary cat then you'll need to find a way around the cell code. You may also lose some low-end tq but gain more mid to top end power.
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