how to tell if cat is dead
06-22-02, 03:35 AM
#1
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Location: san diego, ca, usa
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how to tell if cat is dead
So, I have been getting paranoid lately about how crazy hot the underhood temps get on the RX-7. I read that the pre-cat is prone to failure and can take the engine with it. I've got 56k on my Rex with the stock cats AFAIK. Any way to tell if/when they need replacement?
If they need to be replaced, should I go aftermarket? I'd like to keep it stock but if I can get better emissions and higher flow with aftermarket, I'll do it. Thanks for the help guys.
If they need to be replaced, should I go aftermarket? I'd like to keep it stock but if I can get better emissions and higher flow with aftermarket, I'll do it. Thanks for the help guys.
06-22-02, 10:39 AM
#3
As laujesse2 suggested, go with an aftermarket downpipe. You should still be able to pass smog testing with one installed (although you could fail visual test).
There are many reasons to switch to a downpipe instead of getting another pre-cat, but the most important one is heat. The pre-cat generates a lot of heat under the hood.
There are many reasons to switch to a downpipe instead of getting another pre-cat, but the most important one is heat. The pre-cat generates a lot of heat under the hood.
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