996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

Those of you that removed cats from the exhaust

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Old Aug 10, 2010 | 04:36 PM
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Those of you that removed cats from an aftermarket exhaust

Hello guys,

seems that I need your help once again...

So I bought an EPL flash, and really want to go catless. The problem is that my Fabspeed exh. has 200cell's and has no v-bands or flanges, it's all welded.

So I need some advice on how to remove the cats...

I may cut the section with cats and replace it with straight pipe and weld bungs for O2's on it, but the eaxhaust diameter is 2.5" while the turbos outlet is 3"....I will need a reduction in this case..

Or I may torn off the cats inside the exhaust and leave it as is on the outside, no welds, no cuts, no reductions. How would you procede in this case?


Any ideas are welcome.


Thanks again!
 
Old Aug 10, 2010 | 05:16 PM
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I would look around for another exhaust instead of hacking up a fairly nice exhaust, just in case you want or need to back to a cat. Maybe have Speedtech or Markski whip something catless up for you? Probably be reasonable as the cats are what cost the most usually...
 
Old Aug 10, 2010 | 05:24 PM
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I would look around for another exhaust instead of hacking up a fairly nice exhaust, just in case you want or need to back to a cat. Maybe have Speedtech or Markski whip something catless up for you? Probably be reasonable as the cats are what cost the most usually...
This would be an option...

But I see myself going down the slope....I liked the car stock...then I wanted some more sound and bought an exh....then I thought " why not a flash"....then I want to go catless.....now I may buy another exhaust.....

O my god...


I have to say it is fun though...only my pocket will not be happy if I don't stop this bug.
 
Old Aug 10, 2010 | 05:25 PM
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Originally Posted by emadelta86
I have to say it is fun though...only my pocket will not be happy if I don't stop this bug.
Good Luck with that!!!
 
Old Aug 10, 2010 | 05:26 PM
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and so it begins
 
Old Aug 10, 2010 | 05:49 PM
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Guys you put me on the bad road!


I should have sticked to those conservative Italian Porsche forums...ahah.

People buy souvenirs when visiting other countries, I'll end up with a pair of turbos and I/C in the bag when I'll get there for my holidays in October... And after being there at the TX mile it will get worse!
 
Old Aug 10, 2010 | 05:51 PM
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I bought my car to stay stock (MAYBE a tune after the aftermarket warranty was up)... That lasted... eh 3 months??? Look where I'm at 3.5 years later... Damn you 6speed!!!! LOL!!!!
 
Old Aug 10, 2010 | 06:02 PM
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You just can't get away from modding
 
Old Aug 10, 2010 | 06:09 PM
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I drilled mine out on my old speedtech 70mm. It's a pretty similar system to the fabspeed. I highly recommend doing it and will be doing it to my new speedtech. You can feel the power and hear the turbos much better. It took me a couple of hours for the first one and about 1 hour for the second one.

Technique is to get the best drill bit you can in 1/2" and make an "X" in the cats. Then just go to town with a hammer, drillbit, and pliers.

Your turbos will appreciate it for sure.
 
Old Aug 10, 2010 | 06:28 PM
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Yes. I did the same on my Cargraphics. Drill 4 holes. Use a powersaw with a long blade to saw though and get big chunk square section out. Now use long chisel/pry bar and saw to finish the job. Not very hard job. Total 2-3hours.
 
Old Aug 10, 2010 | 07:17 PM
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Powell 3.5 years ..damn what took you so long. I'm at a full blow through with 3076 in roughly 8 months. That's what you call a disease
 
Old Aug 10, 2010 | 07:29 PM
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Originally Posted by aroonkl
Yes. I did the same on my Cargraphics. Drill 4 holes. Use a powersaw with a long blade to saw though and get big chunk square section out. Now use long chisel/pry bar and saw to finish the job. Not very hard job. Total 2-3hours.
I use a airhammer, some pry bars and a big *** hammer and knocked all the honeycomb out of my cats.
 
Old Aug 10, 2010 | 07:38 PM
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Originally Posted by emadelta86
This would be an option...

But I see myself going down the slope....I liked the car stock...then I wanted some more sound and bought an exh....then I thought " why not a flash"....then I want to go catless.....now I may buy another exhaust.....

O my god...


I have to say it is fun though...only my pocket will not be happy if I don't stop this bug.
do it once do it right... sell that for $1000... the money that the fabrication will cost is at least $500... so now your at $1500+ as a starting point..
then get something like this and you will forget about all the drama... ask a few guys who have my systems.. they will speak up thats for sure...
good luck...

here is something to ponder about...



 
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Old Aug 10, 2010 | 07:49 PM
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This is truly doing it right. I love everything about this picture. I could only imagine the music it produces too.
 
Old Aug 10, 2010 | 10:43 PM
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Originally Posted by Blockhed
Powell 3.5 years ..damn what took you so long. I'm at a full blow through with 3076 in roughly 8 months. That's what you call a disease
Well a year in I had 3076/K24's, messed with that about a year or so. Then I had the Boost Logic kit built. It starts as a little mod then omg it's all over!
 


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