99 Si Stock Cat Going Bad?
#1
99 Si Stock Cat Going Bad?
I recently got a code p0420 , I here that this is most likely the cat. I also started to sometimes get a sulfar smell? My question is what's the best place to find a replacement cat? The car is bone stock minus a Short ram intake. Thanks guys
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Re: 99 Si Stock Cat Going Bad?
Does the car bog at all? Bad gas mileage can be both the sensor and the cat. The smell is definitely the cat and that can make your o2 sensor go bad. Since you are not in CA, you can get it replaced at any local exhaust shop.
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Re: 99 Si Stock Cat Going Bad?
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Re: 99 Si Stock Cat Going Bad?
My cat just recently went bad on my 98 ex and my car did feel sluggish. but i just got a new cat and its running way better now.i Bought a magnaflow cat online for 150$ and installed myself idk if they fit for Si's you should look into it. but you should first find out if its the sensor.
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