2.2L L61 Performance Tech 16 valve 145 hp EcoTec with 155 lb-ft of torque

Gutted Cat

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Old 11-08-2007, 12:43 AM
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Gutted Cat

I have an SS sc downpipe on my 2.2, and i was wondering what effects i would get if i gutted my cat on it?
Old 11-08-2007, 12:44 AM
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well, it would sound like ****, you won't pass inspection, and it will sound like ****. and you won't really gain anything. i wouldn't bother.
Old 11-08-2007, 07:00 AM
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<5 hp and a really loud exhaust. Whether or not you like the sound is a matter of opinion. I bypassed the Cat with a straight pipe and some clamps on my blazer, and its loud as **** and mean sounding now...but its waay to loud. Specially since I gave the car to my girlfriend and she looks like a hillbilly driving a loud ass truck around.
Old 11-08-2007, 04:06 PM
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Thanks, im not gonna do it. How do u kno if ur cat is clogged.
Old 11-08-2007, 04:10 PM
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the litter is clean
Old 11-08-2007, 04:12 PM
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Old 11-08-2007, 04:14 PM
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Originally Posted by YzRider452
I have an SS sc downpipe on my 2.2, and i was wondering what effects i would get if i gutted my cat on it?
you'll prolly get a p0420 code
Old 11-08-2007, 04:15 PM
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what? im serious. how doi know if my cat is clogged.

Thanks, no codes, maybe im ok.

Last edited by YzRider452; 11-08-2007 at 04:15 PM. Reason: Automerged Doublepost
Old 11-08-2007, 04:16 PM
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youd likely get codes, your cat will get very very hot.
your car may have issues at high rpm (sputtering, coughing, backfire)
exhaust may develope rattles
Old 11-08-2007, 04:17 PM
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You smell carbon and ****, you may notice small metallic particles around the exit of your exhaust. Tap it LIGHTLY with a mallet to see if something is rattling around in there.

You will be making more boost than normal... oh wait... you dont make boost
Old 11-08-2007, 04:49 PM
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It's not that loud but it does sound Honda-ish
Old 11-08-2007, 04:53 PM
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so even with the stock exhaust it sounds loud? cuz i have a full lsj exhaust, header, dp, and catback...so if i gutted the cat, it'd be loud as hell, even wth a stock muffler? hmm...
Old 11-10-2007, 11:09 PM
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Originally Posted by balmung892003
so even with the stock exhaust it sounds loud? cuz i have a full lsj exhaust, header, dp, and catback...so if i gutted the cat, it'd be loud as hell, even wth a stock muffler? hmm...
not in a good way...
Old 11-10-2007, 11:11 PM
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Originally Posted by D4u2s0t
well, it would sound like ****, you won't pass inspection, and it will sound like ****. and you won't really gain anything. i wouldn't bother.
You forgot to mention that it will sound like **** dude.
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