Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

Cobb STi 3" SS Down-pipe

Old 07-24-2004, 02:39 AM
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Cobb STi 3" SS Down-pipe

I just got the Cobb down-pipe for the STi. Here's some pictures.....
Attached Thumbnails Cobb STi 3" SS Down-pipe-pipe-001.jpg   Cobb STi 3" SS Down-pipe-pipe-003.jpg   Cobb STi 3" SS Down-pipe-pipe-004.jpg  
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Old 07-24-2004, 02:41 AM
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wOOt

I'll try and find the time to do the install tomorrow and do a write up.

Attached Thumbnails Cobb STi 3" SS Down-pipe-pipe-005.jpg   Cobb STi 3" SS Down-pipe-pipe-006.jpg  
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Old 07-24-2004, 02:51 AM
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Last edited by Mach5WRX; 07-24-2004 at 02:52 AM. Reason: because I'm dumb
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Old 07-24-2004, 04:53 PM
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http://www.wrxforum.com/cgi-bin/ulti...c;f=8;t=000313

not too happy right now
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Old 07-25-2004, 01:06 PM
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I have the Cobb AccessPort and I'm running the 91oct stage 2 map, down-pipe and stock cat-back exhaust.

I had a PDE down-pipe but now I have the Cobb....I can't tell a differance between the pipes.

But you will see a noticeable difference in acceleration from stock to installing an aftermarket down-pipe.
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Old 08-06-2004, 09:54 AM
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It uses the stock type doughnut gasket and tapers down to 2.5" at the end.
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Old 08-07-2004, 04:06 PM
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Hey Mach5, I'm considering the same setup but am wondering about the noise level? How do the two pipes compare to stock and each other? I am planning on using the catted cobb downpipe with the stock catback, I imagine the catted version would be a tad quieter. My only concern is that the sound clips I've heard of aftermarket downpipes mated to the stock catback are usually pretty tinny and loud. Anyway didn't mean to hijack the thread... Sucks you had to grind it but I have to say it's a nice looking pipe.


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