2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

Is my cat. converter clogged?

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Old 10-24-2006, 09:52 AM
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Is my cat. converter clogged?

Well I recently posteed about throttle lag issues but I am now thinking it is exhaust related.

What are the main signs of a cat. plugging up?

I have no power past 4000rpm and boost comes on very quick with 10psi by 2000rpm and 15psi at 4500rpm.

The exhaust was alway quiet but I think it may have also went down in volume a little.
Old 10-24-2006, 10:09 AM
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kinda sounds like you might have a cloged cat....but im no expert. personally i want a cloged cat, it would be an excuse to get a new exaust....YES!!!
Old 10-24-2006, 10:12 AM
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Thast exactly what mine was doing, it was the cat. Take it in quick before you mess something up!
Old 10-24-2006, 11:41 AM
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Get that cat out of your exhaust before it screws up your engine!
Old 10-24-2006, 11:46 AM
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Yeah this is definitly a CAT problem. Just be easy on her untill you can get a new one. Hey man if you can afford it just get a new performance downpipe that includes a high flow cat.

Signs of a clogged cat.

- Egg smell
- Quick and over boosting
- Poor performance in high rpms
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