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BMW 3-Series (E90 E92) Forum
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Can someone help me out here?
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06-11-2009, 05:11 PM | #1 |
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Can someone help me out here?
I deleted my cats and now i have a service engine soon and occasionally i get engine malfunctions. What do i need to do to fix this? thanks.
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06-11-2009, 05:20 PM | #3 |
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06-11-2009, 06:03 PM | #6 |
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06-11-2009, 06:50 PM | #8 |
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Can you clarify? Which cats did you remove? You should only throw codes from cat removal if you cut them out of the downpipes. I have not ever heard of anyone cutting cats out of the stock DP's.
The 2 DP's further down the exhaust system can be removed and will not throw codes since the o2 sensors are up closer to the engine on the downpipes. |
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06-11-2009, 07:03 PM | #9 |
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i read the procede has a built in o2 sym.
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06-11-2009, 10:42 PM | #11 |
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