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M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > ECU tuning and California smog question

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      02-03-2017, 02:27 AM   #1
UltraMagneticAL
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ECU tuning and California smog question

Back when i built Japanese cars, i ran the apex ecu which replaced the entire stock computer. When it came time to smog, i just swapped the ECU's with the factory unit and all was well.

Now it's time for me to plan out the rest of my m2 build and was wondering how something like bm3 would look to the state? The guy i go to doesn't care about most bolt on's, and as long as i have the factory tune and oem cat, i should pass the sniffer. But what about the software connection? When i smogged my e92, they didn't even put it on the dyno and just connected to the obd2 port? Does an unlocked DME get reported? I know it's a long time before i have to get it smogged, but just wanted to take it into consideration for the future
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      02-03-2017, 01:14 PM   #2
LBBDrew
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What's the rule in CA again? 6 years after new purchase, every 2 years after that? And every 2 years if the vehicle was purchased used?
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      02-03-2017, 02:37 PM   #3
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Quote:
Originally Posted by LBBDrew View Post
What's the rule in CA again? 6 years after new purchase, every 2 years after that? And every 2 years if the vehicle was purchased used?
Sounds about right. .. Then every so often the STAR smog only
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      08-06-2017, 05:48 PM   #4
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I ran into this post and was curious as well since I'm also I CA. Is it possible for example to run a VF tune and before a smog revert back to stock form?
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      08-07-2017, 06:24 PM   #5
lax01
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I thought it was 5 years in CA now.

Pretty sure they aren't dynoing cars anymore...for new vehicles...only older ones.

I guess they can still do a visual inspection...
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      08-14-2017, 03:14 PM   #6
bunster
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new cars don't need to be smoged until 6 years.
http://www.dmv.org/ca-california/smog-check.php
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      08-14-2017, 08:06 PM   #7
ried
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Unless you purchase it elsewhere and then attempt to title it in California... as with my M2. It was less than 6 months old and I had to smog it when registering it here.
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      05-28-2018, 05:04 PM   #8
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Were you able to pass SMOG when you brought your M2 into California? My M2 isn't able to connect to the SMOG systems through the OBD-II, so they keep failing me... but I think perhaps the SMOG Detection System is too old at the places I'm going... thoughts?
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      07-18-2018, 04:11 PM   #9
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Quote:
Originally Posted by canibaldude View Post
Were you able to pass SMOG when you brought your M2 into California? My M2 isn't able to connect to the SMOG systems through the OBD-II, so they keep failing me... but I think perhaps the SMOG Detection System is too old at the places I'm going... thoughts?
Did you get this sorted?
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