03-05-2024, 09:42 AM | #1 |
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Passing inspection with Catless downpipe
Does anybody know if it is possible to pass inspection in NY with catless downpipe. im on the stage 2 mhd map with aftermarket downpipe selected. i know the check engine light has nothing to do with the ready monitors . i keep hearing that mhd tune will say 3 monitors not ready but ny state only allows for one monitor not ready. Does anybody have a method or anybody can point me in the right direction.
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03-05-2024, 09:48 AM | #2 |
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If its like TX, just go to the bad part of town with a roll of cash and it will pass every time…or so I am told.
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03-05-2024, 09:55 AM | #3 |
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you honestly not wrong. im just not in the mood for inspectors to act weird for the downpipe. if anybody in NY see's this put me on. Aint no way all these boys in NY got all these 340s n M's n not passing
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03-05-2024, 10:03 AM | #4 | |
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If you clear the CEL you also reset all the readiness monitors to incomplete. A suitable drive cycle is thus required to give the ECU time to complete all the readiness monitor tests. Get a suitable OBD2 code reader/scan tool that lets you check CEL status and readiness monitor statuses. Check these before you take the car in for an inspection. But if the CEL is on or there are too many readiness monitors still incomplete or even just one but a critical one you need to deal with the CEL and incomplete readiness monitors. Also, even if the CEL is dark and the readiness monitors are all set to complete there is the chance the car may *not* pass a visual inspection. For details on what is involved here's a link for you: https://dmv.ny.gov/brochure/new-york...ection-program About 5 screens down is the section on emissions inspection. |
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03-05-2024, 10:17 AM | #5 |
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It does not specify the number of readiness minutes that can be not ready. I would be surprised if the MHD tune does not allow simulation of the post cat O2. If you have no CEL, you should be fine. If you have a CEL, an inspection station cannot legally pass you.
There is no inspection station trick to fake an OBD2 plug in. They can say the machine did not auto read the VIN and type it in manually and plug into a stock car instead but I know someone who was caught doing that, albeit in another state. The data is uploaded to the state and they have ways of spotting anomalies. Looking the other way on the visual inspection part (presence of cat) is where there is flexibility a shop can get away with. |
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03-05-2024, 10:25 AM | #6 | |
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Last edited by JustcallmeToby; 03-05-2024 at 10:35 AM.. |
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03-05-2024, 10:40 AM | #7 | |
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03-05-2024, 10:56 AM | #8 | |
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03-05-2024, 11:11 AM | #9 | |
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Also, each year more states are starting to check for stock engine software during an emissions test. If you’re running an aftermarket ecu tune you will not pass. On BM3, you have to reload the stock ecu tune AND relock your ecu. An unlocked ecu won’t pass. Is NY a state that’s checking ecu’s? I don’t know. The state I live in starting checking ecu’s between 2019 and 2021. Check out this link: https://f80.bimmerpost.com/forums/sh...98&postcount=1 |
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03-05-2024, 11:12 AM | #10 |
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You know you are out of compliance. Why not just get a catted down pipe?
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03-05-2024, 11:19 AM | #11 | |
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BM3 and others (Kies got 1000 whp WITH stock cats) have said stage 2 tunes do not require catless setups. |
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03-05-2024, 11:33 AM | #12 | |
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03-05-2024, 12:08 PM | #13 | |
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03-05-2024, 12:17 PM | #14 |
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If your hand-held obd scan tool can tell you don’t have cats, do you think the official NY emissions testing equipment can’t tell?
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03-05-2024, 12:30 PM | #15 | |
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03-05-2024, 01:05 PM | #16 |
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Has not happened in my state yet, but I have the ability to flash back to stock and swap in stock primaries if needed. Must be that CA standard that some other states have adopted including some on the East coast. Like others have said, the stock BMW cars at least on the F90 M5 are high flowing. There are also expensive aftermarket HJS cats that flow even better and will pass emissions.
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03-05-2024, 03:09 PM | #17 |
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Most tunes will keep the CEL off but also do not allow enough monitors to go ready. In NY, you can only have 1 monitor not ready and I am pretty sure that you will have more than 1 not ready if you are tuned with a catless downpipe even if you have no CEL. If you want to stop by the UWS, I would be happy to check it for you - it takes about a minute. I do not think they have any way of checking if you have a tune or not and most places would never notice the lack of cats because you can't see anything back there anyway. They have to connect the inspection machine to your car to read the data so I am not even sure a garage in the Bronx has a way around this. You can't connect it to another car to trick it like the old days. I have BM3 and I leave the tune in for my inspection and it passes fine but I still have primary cats.
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03-05-2024, 07:32 PM | #18 | |
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03-05-2024, 08:26 PM | #19 | |
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03-05-2024, 09:44 PM | #20 |
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Love Washington state. No inspections.
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03-06-2024, 08:09 AM | #22 |
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