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Discussion Starter · #1 ·
I have a 2"(stock diameter) exhaust, straight through resonator and Dynomax at the back. Last week my exhaust hanger broke and it turned out to be 3 of them so the exhaust was hanging on only 1. After a couple of days of vibrating and exhaust hitting the rear beam ,I got that fixed but all the rattling caused a leak at the flanges between the cat and the downpipe.
After I fixed it I noticed that the car would not rev very well and has no power at all so I'm suspecting that the rattling caused the cat to fall apart inside and plug itself.
Questions:
1. What are the odds it's something else(IMO, not likely)
2. For you guys who straightpiped the cat, where did you put your 02 sensor?
3. Considering that I could use money somewhere else, should I just straighpipe the cat(about $70CDN) or...
4. Get a 2.25 Dynomax with 1 resonator and straight pipe for a cat(it will cost me about $300 CDN)
5. Big difference between 2" and 2.25" non stock systems?
Thanks.
 

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Re: Plugged cat, dillema and 02 sensor question. (Batan)

1st things first, take it to a reputable shop. They can do a backpressure test to see, if in fact, the cat is clogged. Then go from there.
I had it done last week and they didn't even charge me for it.
 

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Re: Plugged cat, dillema and 02 sensor question. (Batan)

1. vibrating caused cat internals to collapse on themselves? Nah...won't happen
2. weld a bung right in the stright pipe itself
3. yah...it will be louder and not emission legal however
4. Dynomax is crap
5. yea, 2.25 flows a lot better than 2
 

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Discussion Starter · #4 ·
Re: Plugged cat, dillema and 02 sensor question. (PowerDubs)

Quote, originally posted by PowerDubs »
1. vibrating caused cat internals to collapse on themselves? Nah...won't happen
2. weld a bung right in the stright pipe itself


1. Well, it's too much of a coincidence, isn't it? From what I've read about the desintegrated cats, it's acting exactly like that.
2. Wouldn't that restrict flow quite a bit?
 
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