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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > USA - California > CA ECU Smogging



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      07-19-2021, 05:16 PM   #1
filhotran
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CA ECU Smogging

Hi forum,
Now that CA is going to start scanning ECU for tune, what are the tuned guys gonna do? Personally, I am not tuned but I was planning to go FMIC, charge pipe, intakes + tune sometime in 2022, but it Iím not sure if thatís still a good idea. Is there a workaround to the whole ECU scan thing?? Do I settle with the old Dinan or PPK (if you can even still get that)? Let me know your thoughts.
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      07-19-2021, 05:57 PM   #2
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Quote:
Originally Posted by filhotran View Post
Hi forum,
Now that CA is going to start scanning ECU for tune, what are the tuned guys gonna do? Personally, I am not tuned but I was planning to go FMIC, charge pipe, intakes + tune sometime in 2022, but it Iím not sure if thatís still a good idea. Is there a workaround to the whole ECU scan thing?? Do I settle with the old Dinan or PPK (if you can even still get that)? Let me know your thoughts.
All you need to do is flash back to your OEM software when it's time to smog. When you flash MHD onto your car, it saves a backup of your original stock tune to your phone/tablet, so when the time comes to smog it just flash it back to the stock file.
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      07-19-2021, 11:45 PM   #3
bimmerguy1210
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You can probably get away with a fmic and chargepipe when it comes to the visual. I like to put the stock airbox back on to hide the chargepipe and to eliminate any doubt that the car is modded, even though the bms dciís are carb approved.

And as for the ecu tune, if you have mhd then itís a simple flash to stock and youíre done.
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      07-20-2021, 12:09 AM   #4
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Quote:
Originally Posted by bimmerguy1210 View Post
You can probably get away with a fmic and chargepipe when it comes to the visual. I like to put the stock airbox back on to hide the chargepipe and to eliminate any doubt that the car is modded, even though the bms dci’s are carb approved.

And as for the ecu tune, if you have mhd then it’s a simple flash to stock and you’re done.
yes, I get away with FMIC, inlets, outlets,(and probably charge pipe this time also). I just throw the stock down pipes and airbox on, then flash to stock.
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      07-20-2021, 01:38 AM   #5
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Quote:
Originally Posted by IllSic_Design View Post
yes, I get away with FMIC, inlets, outlets,(and probably charge pipe this time also). I just throw the stock down pipes and airbox on, then flash to stock.

Does flashing back to stock software from MHD reset the readiness monitors?
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      07-20-2021, 04:36 AM   #6
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Quote:
Originally Posted by IllSic_Design View Post
yes, I get away with FMIC, inlets, outlets,(and probably charge pipe this time also). I just throw the stock down pipes and airbox on, then flash to stock.
do you think downpipes are worth it in cali??
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      07-20-2021, 09:42 AM   #7
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Originally Posted by silver07335i View Post
Does flashing back to stock software from MHD reset the readiness monitors?
Yes it does.. unfortunately, you'll have to do take the drive to get them ready again
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      07-20-2021, 05:11 PM   #8
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Quote:
Originally Posted by silver07335i View Post
Does flashing back to stock software from MHD reset the readiness monitors?
Yes, took me a day or so driving to and from work to set mine

Quote:
Originally Posted by filhotran View Post
do you think downpipes are worth it in cali??
IMO yes, in terms of performance and sound. Only downside is having to remove them for SMOG testing
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      07-20-2021, 10:47 PM   #9
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Yes, took me a day or so driving to and from work to set mine



IMO yes, in terms of performance and sound. Only downside is having to remove them for SMOG testing
how long does it normally take to take off all the fbo into stock?
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      07-20-2021, 10:57 PM   #10
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how long does it normally take to take off all the fbo into stock?
I only put stock down pipes on and change the air box back to stock, I leave everything else on. Usually takes around 2-3 hours for me, but I've had plenty of practice.
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      08-15-2021, 12:02 AM   #11
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I failed smog last year and had to go to the refereeÖ. After 3 tries I finally figured out it was the m3 gauge cluster that was causing it to fail. Giving a incorrect checksum number and instantly failing. Now Iím worried the mmi I added for the CarPlay will might do the same. Anyone else had issues with electronics??
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      08-24-2021, 08:46 PM   #12
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Quote:
Originally Posted by Walker16 View Post
I failed smog last year and had to go to the refereeÖ. After 3 tries I finally figured out it was the m3 gauge cluster that was causing it to fail. Giving a incorrect checksum number and instantly failing. Now Iím worried the mmi I added for the CarPlay will might do the same. Anyone else had issues with electronics??
That's what I am afraid off. I had an MSD80 that failed and I swapped and codded MSD81. Pretty sure its an automatic fail.
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      09-07-2021, 05:29 PM   #13
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Quote:
Originally Posted by IllSic_Design View Post
I only put stock down pipes on and change the air box back to stock, I leave everything else on. Usually takes around 2-3 hours for me, but I've had plenty of practice.
is it a high chance to pass with inlets and outlets or did you just get lucky? i remember when i went to get smogged, the dude spent like 10 minutes with a flashlight to look under my hood and even though im still stock for now, that shit made me anxious as hell
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      09-11-2021, 02:11 PM   #14
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Quote:
Originally Posted by filhotran View Post
is it a high chance to pass with inlets and outlets or did you just get lucky? i remember when i went to get smogged, the dude spent like 10 minutes with a flashlight to look under my hood and even though im still stock for now, that shit made me anxious as hell
Lol why tho? Afraid he was gna arrest u for being stock??
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      09-12-2021, 04:16 PM   #15
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Quote:
Originally Posted by filhotran View Post
is it a high chance to pass with inlets and outlets or did you just get lucky? i remember when i went to get smogged, the dude spent like 10 minutes with a flashlight to look under my hood and even though im still stock for now, that shit made me anxious as hell
I have passed the last 2 times with inlets and outlets with no issues. I do put my stock airbox and DP's on so it looks stock otherwise.
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      09-15-2021, 07:54 PM   #16
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Quote:
Originally Posted by IllSic_Design View Post
I have passed the last 2 times with inlets and outlets with no issues. I do put my stock airbox and DP's on so it looks stock otherwise.
Damn, I just failed for a aluminum charge pipe on my n55. Didn't feel like changing it so I took it to another place to roll the dice and they failed me also for the charge pipe . Guess I'll just put the stock one back on and get a free re-test that the second shop offered me.
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      09-15-2021, 08:29 PM   #17
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Damn, I just failed for a aluminum charge pipe on my n55. Didn't feel like changing it so I took it to another place to roll the dice and they failed me also for the charge pipe . Guess I'll just put the stock one back on and get a free re-test that the second shop offered me.
Ooh yeah I am still running a stock charge pipe lol, waiting to put it on until after I smog in Dec since it's lasted this long haha
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