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11-13-2012, 09:46 PM | #1 |
Professional Trophy Husband
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Car Won't Pass Inspection?
I have a 2009 M3 sedan with a dealer installed Dinan exhaust and tune. It's still under warranty and it drives great. I went to get a state inspection almost two weeks ago at my dealer. They told me my car didn't pass inspection because the O2 sensor and the catalytic converter sensor were registering as "not ready". They told me I needed to drive my car through a specified driving profile (5 minutes idle, 10 minutes 2-40 mph, 15 minutes 40-60 mph, etc). I did what they asked and it didn't help. So they kept my car so the mechanic could drive it. Anyway, it's been a week and a half and they've only cleared one fault. Now they're telling me one of the ECUs(?) may not be communicating correctly and may need to be replaced under warranty. Has anyone else had a problem getting their M3 to pass inspection?
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11-13-2012, 11:28 PM | #2 |
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2009 and inspection required?
I thought Cali was bad! I think they give us a 5 year "grace period" before the smog inspections are required. As far as the "drive cycle" or whatever they call it, that part is true, any time the power has been disconnected from pretty much any car. MAYBE the 2nd "fault" will clear up, once the car has been driven more. I never went throught the "procedure", I just drove the heck out of my car between the power disconnect & the test (about 200 miles or so). Good luck |
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11-14-2012, 07:58 AM | #4 |
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If you have a full exhaust on there, you're going to need to take the Dinan x-pipe off and put the factory one back on for the test. And swap back after. Might be a pain, but you'll pass.
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11-14-2012, 12:54 PM | #6 |
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We need more info on the exhaust. Is it a full exhaust with Dinan x-pipe or just a Dinan rear section. The tune may have turned off the rear O2 sensors to avoid a CEL for missing cats. This will come up as "not ready" causing you to fail.
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11-14-2012, 05:59 PM | #7 |
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I just have the Dinan rear section. I asked them if it was the tune. They could easily remove the tune, run the test, and put the tune back on. Apparently, they don't think it's the tune.
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11-14-2012, 06:05 PM | #8 |
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I was curious about this similar issue.
I ordered a Dinan rear muffler and am still considering tune... (even more so now that I discovered 15% off sale from Dinan thru 12/31/12) but, want to make sure that the two combined will not cause a problem with CA smog.
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11-14-2012, 06:17 PM | #9 |
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It's not the Dinan tune or cat-back exhaust. I've had both on three different BMW's and pasted years of emissions inspections in NY, CT and PA with NO problem.
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11-14-2012, 08:40 PM | #10 |
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