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BMW 3-Series (E90 E92) Forum
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California Smog Check Will Fail ECU Tunes Starting July 19, 2021
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07-23-2021, 04:15 PM | #45 | |
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07-23-2021, 05:37 PM | #46 |
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Thank you for further confirming my posts.... Yes, swaps are def a pain in the ass, but you can swap most anything if it follows what I said in my first post
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07-27-2021, 01:01 PM | #47 |
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Just when I was feeling nostalgic and missing California. Hahahahahahaha!
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07-30-2021, 12:38 PM | #48 |
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Found another article with a good explanation of the new testing procedure: https://www.thedrive.com/cars-101/41...tune-flash-faq
Would be interested to hear if someone has failed after flashing back to stock or has passed despite a tune. Or what the process through the referee is like in the case of a fail. Anyone had their car smogged in the last couple weeks? |
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07-30-2021, 07:36 PM | #49 | |
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07-31-2021, 12:16 PM | #50 | |
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Ie no truck engines into cars and vice versa Now it is even harder as you can't even unlock Ecu for immobilizer bypass since it may create a different check sum and cause it to fail smog It's a lot of backwards laws happen, and it got worse It's not about emissions since a newer engine will ALWAYS run cleaner than one that is 20 yrs older If it was about cleaner air , they should ONLY care about what comes out the tail pipe |
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07-31-2021, 11:40 PM | #51 | ||
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09-08-2021, 01:25 AM | #52 | ||
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10-29-2021, 11:42 AM | #54 | ||
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It's so much easier, faster, and safer to check the computer versus putting the car on a dyno with a tailpipe sniffer. Quote:
Changing the tune changes the 1's and 0's, so you'll get a different checksum. Forcing a known-good value is a felony. You cannot pass the checksum using an aftermarket tune. Stock, MPE, Dinan, etc are all certified, so they will have a valid checksum. They also check to see if your ECU is locked (supposedly preventing tunes). Even on a stock tune, you will fail with an unlocked ECU. Hardware mods that can be controlled by a stock tune won't cause a checksum failure. But you'll fail the visual if it looks aftermarket without an EO number. |
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10-29-2021, 12:38 PM | #55 | |
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Also, the ecus can be unlocked and tuned without any traces to CAL ID/ CVN, so it's still not exactly that different. I can unlock these M2C ecus without any trace at all, anywhere.
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10-29-2021, 04:00 PM | #57 |
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So I should be ok if I flash back to stock and lock DME just for the smog? Just want to plan this out before I start smog checks next year and what to prepare for.......
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10-29-2021, 10:37 PM | #59 | |
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10-29-2021, 10:39 PM | #60 | |
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10-30-2021, 12:32 PM | #61 |
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The unlock is a data hack in the dme. It does modify the checksums/CVN, so it will still be considered "tampered".
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-2014 328d Wagon, 8HP. Self-tuned, 270hp/430ft-lbs.
-2019 M2 Competition MT, Alpine White. Self-tuned 560hp -2016 Mini Cooper S, MT. Many plans. Others: -E36 328is. 2000 Z3 Roady. 2003 VW Jetta TDI Manual. Estoril Z3M Coupe. |
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11-01-2021, 03:14 PM | #64 |
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Your not saying much of anything, neither is the guy who you are trying to defend
Commieofornia has just had its recall election stolen in front of everyone, whats happening there is a early indicator of what 'they' plan on rolling out to the rest of the country People need to say No! |
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11-08-2021, 09:25 PM | #65 |
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Didn’t they already go after plastic straws, because those high capacity rapid delivery devices cause death in poor innocent persons.
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california, ecu, ecu bmw tuning, n54, n55, piggyback, smog, smog check, tune, tuning |
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