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ATP test pipe in: Thoughts and comments

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Old Nov 19, 2005 | 03:57 PM
  #1  
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Default ATP test pipe in: Thoughts and comments

So after three days of messing with the bolts connecting the CAT and exhuast pipe i finally got the Cat out and test pipe in.. Threw a CEL instantly..
Anyways, the car is much more responsive, the turbo is very loud (even when giving it very little gas), exhuast is much more "throaty" and just a bit louder then it was before, and power gains feels like at least 8HP more. The car is so much more fun to drive. This is definately one of the best mods i have done so far and couldn't be happier with it, expecially since the pipe was only $160...

Heres the pipe in (not the best pic), and a car pic just for fun...

<img src="http://img.photobucket.com/albums/v687/sk8drew201/DSC04353.jpg" alt="Image hosted by Photobucket.com">

<img src="http://img.photobucket.com/albums/v687/sk8drew201/DSC04358.jpg" alt="Image hosted by Photobucket.com">
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Old Nov 19, 2005 | 04:21 PM
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OT was size width are those ST-115s?
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Old Nov 19, 2005 | 04:25 PM
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Great, I think I am going to pick one up as well, now its time for some spark plug non foulers
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Old Nov 19, 2005 | 04:25 PM
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Default cool. I have a thought about the CEL...

I thought I read somewhere that you could lengthen the o2 bung(spark plug non-foulers) so that it doesn't sit so deep in the pipe. That way it won't set off a CEL?..am I wrong?
J
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Old Nov 19, 2005 | 04:46 PM
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Im actually not sure...
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Old Nov 19, 2005 | 04:47 PM
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yea, thats what i plan on getting next...
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Old Nov 19, 2005 | 04:51 PM
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Default No your right. I have heard of 3 ways to avoid a CEL...

1.) wrap the entire pipe in heat wrap. (im not sure how well this method works.)
2.) The way that you have mentioned above, although im not too sure if thats exactly right and how it works.
3.) There are companys that have programs to tell you ECU to ignore the o2 sensors not detecting a cat, however these programs usually come with turbo upgrades and i havent been able to find a stand alone program just for this cause, and i dont want to spend $300 + on the chip to just get rid of the engine light.

I have also heard that it is possible to plug a vag-com into the car and mnually delete the code and make it so it doesnt reappear but i am pretty skeptical about this one and not sure if its true...
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Old Nov 19, 2005 | 05:10 PM
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Default there is a write up somewhere in the tech articles on how to simulate/wire the second o2 sensor to

give correct value to your ECU ..
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Old Nov 19, 2005 | 05:15 PM
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Default here it is

<ul><li><a href="https://www.audiworld.com/tech/eng53.shtml">o2 mod</a></li></ul>
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Old Nov 19, 2005 | 05:23 PM
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Default It absolutely works. I have run it for about 5k miles with no problems.

<center><img src="http://i.pbase.com/g4/72/81272/2/52480402.IMG_7937.jpg"></center><p>The only hard bard is drilling the non-fouler perfectly centered with the 1/2" bit.
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