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Old 09-29-2004, 08:53 PM   #1
rabbitnutz
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Default cleaning cats ?

so, i bought a pair of catalytic converters off of another member, ecause i foolishly hollowed out my rear cat.

so heres the thing..when i look inside my cats from the end closest to the engine, my cat appears a dark grey...when i look in the other set, it's pitch black.

the bolts are stuck and rusted together, so i don't want toseperate the two, and replace just my rear cat.

is there any way i could clean out the first cat ?
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Old 09-30-2004, 03:03 PM   #2
rabbitnutz
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no one has any ideas ?
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Old 09-30-2004, 04:02 PM   #3
96Imprezadent
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wire brush....you really need to take it off. get some PB blaster and soak that ish for a day they break them loose. it they break (happened to me) get new bolts!
-Pete
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Old 09-30-2004, 06:24 PM   #4
Legacy777
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just run some seafoam through the engine when you put the new cat on.
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Old 10-01-2004, 02:26 AM   #5
dreaminsubys
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1998 Legacy Outback

Question

What happened when you hallowed out the rear cat? I was thinking about doing this to pick up a couple of horsepower. On My 98 outback there looks like there is another cat behind the last O2 sensor. A cat back exhaust might be an option if I can find a shop that will give me a good deal.

Pete
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Old 10-01-2004, 02:27 AM   #6
96Imprezadent
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13.4@105 Record Run.

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off topic but i never knew there were so many petes in the world until i came to this community
-Pete
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Old 10-01-2004, 02:33 AM   #7
rabbitnutz
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do NOT hollow out the cat...i was expecting louder exhaust ( i have an apex 'i N1) and more HP and TQ....i got nothing but a slower car...my car went form a best of 16.5 and an average of 16.8..to a best of 17.0 and an average of 18.5 afterwards....


i was thinking the seafoam thing...hopfully it will work.
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