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Old 03-05-2003, 07:09 PM   #1
jasona
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Default what the heck is this thing?

this is my stock exhaust system. what's the little cylinder behind the cat? i just noticed it when i went outside and looked at it. resonator? if so, any idea what the inner diameter is? i need a resonator.

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Old 03-05-2003, 07:12 PM   #2
mycarsux
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thats the resonator all right. the size...uhh i think the pipe was like 2.25 or something. all i know it was small. i got rid of mine. oh and the thing b4 the resonator that looks like a cat is another resonotar. got that off too. sounds little bit more aggressive now.
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Old 03-05-2003, 07:26 PM   #3
jasona
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Quote:
Originally posted by mycarsux
the thing b4 the resonator that looks like a cat is another resonotar
fo' real??? tricky bastards at subaru
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Old 03-05-2003, 07:57 PM   #4
mycarsux
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yup, thats what the guy at the muffler shop said~
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Old 03-05-2003, 11:45 PM   #5
DrBoy01
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I concur with the above poster(s).
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Old 03-06-2003, 01:56 AM   #6
joefocker20
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Its 1 1/8". Stromung is 2.25".
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Old 03-06-2003, 02:20 PM   #7
m750
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I do not concure. The Cat looking thing... is a cat. I have one in my basement, and it's 100% cat. The 2.5rs has 2 cats, and 1 resonator.
AO
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Old 03-06-2003, 02:29 PM   #8
Pat L.I.
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i have been trying to find out the answer to this all morning. and i am still not 100% positive who is correct.
i posted on cobb tunings message board and josh from cobb wrote back that the 2.5l rs's have 2 cats. the thing in the midpipe that people usually mistake for a cat is actually a pre-silencer chamber.

m750 what makes you think its a cat?
we need to get to the bottom of this!
Pat
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Old 03-06-2003, 03:28 PM   #9
jasona
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it looks like a cat, thats all i know
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Old 03-06-2003, 03:58 PM   #10
mycarsux
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Pat is right, its a pre-silencer. the guy at the muffler shop took it off and looked inside of it and said it looked nothing like a cat inside yet it does in the outside. if it was a cat, the muffler shop wouldnt have taken it off.
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Old 03-07-2003, 05:08 PM   #11
m750
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I stand corrected...


here is a picture of the RS cats... 2 of them... You guys are right, the second 2 in line things are resonators... Rule of thumb, it's it's a cat, it'll most likely have an 02 sensor after it.
Sorry to add to the confusion. The round thing looks like the cats, but isnt...
Shrug, not enough coffee that day.
AO
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Old 03-07-2003, 07:34 PM   #12
mycarsux
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woa...that looks different from my car...i guess the gc8 and gda RSs has a lot things that r different.
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Old 03-07-2003, 07:40 PM   #13
jasona
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really? it looks like mine

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