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Old 02-23-2010, 01:58 PM
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Cat Issue
Hey guys, it's been a while since I've last been on. Just been real busy and winter time in PA doesn't exactly inspire me to mess around with my car. My check engine light came on the other day and I got it checked out at Advanced Auto. "P0420Catalyst system efficiency below threshold" came up. I also noticed lately that I wasn't getting the power that I should be from my car, so does this mean I just need to swap out my old cat with a new one? If so I'm going to buy a high flow. Anyone know a good website that has cheap prices for highflows?
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Old 02-23-2010, 02:49 PM
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Originally Posted by Berksallday
Hey guys, it's been a while since I've last been on. Just been real busy and winter time in PA doesn't exactly inspire me to mess around with my car. My check engine light came on the other day and I got it checked out at Advanced Auto. "P0420Catalyst system efficiency below threshold" came up. I also noticed lately that I wasn't getting the power that I should be from my car, so does this mean I just need to swap out my old cat with a new one? If so I'm going to buy a high flow. Anyone know a good website that has cheap prices for highflows?
ebay..... or your local muffler shop...
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Old 02-23-2010, 03:52 PM
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Originally Posted by Berksallday
Hey guys, it's been a while since I've last been on. Just been real busy and winter time in PA doesn't exactly inspire me to mess around with my car. My check engine light came on the other day and I got it checked out at Advanced Auto. "P0420Catalyst system efficiency below threshold" came up. I also noticed lately that I wasn't getting the power that I should be from my car, so does this mean I just need to swap out my old cat with a new one? If so I'm going to buy a high flow. Anyone know a good website that has cheap prices for highflows?
just don't get a magnaflow high-flow, they throw codes.
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Old 03-03-2010, 02:59 PM
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The check engine light came off yesterday. Any reasons as to why that happened because I'm pretty sure that the cat is bad.
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Old 03-03-2010, 05:31 PM
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Could just be the sensor got temporarily fouled. Tripping the CEL causes VTEC to not work which would account for your loss of power.
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