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      07-15-2020, 05:59 PM   #1
1sicke92
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Smog las vegas

Hello everyone,

I'm up for smog, and I've recently moved from CA. I'm FBO so obvi catless dps. What can I do to pass smog without removing my DPs and replacing with stock ones?

I hear the DP fix is unreliable and and PITA to get it to work if it even ever works.

I have my JB4 on Map 0, and will flash MHD to Map 0/Stock as well and complete a few drive cycles. But any tips about how to get around it or how to only fail X amount of monitors would be appreciated!
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      12-22-2021, 01:36 AM   #2
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What did you end up doing? How did it go? I'm in Vegas and my smog is coming up soon.
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      12-27-2021, 09:08 AM   #3
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As far as I know they only scan for codes.
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      12-27-2021, 03:23 PM   #4
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Thanks for responding. Santa got me some catless downpipes and MHD so this is something I have been thinking about.
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      01-05-2022, 05:12 PM   #5
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Originally Posted by jamesph82 View Post
What did you end up doing? How did it go? I'm in Vegas and my smog is coming up soon.
I tried the DP Fix and it didn't work, so I swapped off the catless DPs for the stock cats, and passed
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      01-05-2022, 08:07 PM   #6
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I tried the DP Fix and it didn't work, so I swapped off the catless DPs for the stock cats, and passed
So you change it out every year?
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      01-05-2022, 09:00 PM   #7
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So you change it out every year?
yes, it gets easier every time you do it
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      02-02-2022, 01:55 PM   #8
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Has anyone tried passing smog with a high flow cat downpipes?
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      02-02-2022, 03:41 PM   #9
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Has anyone tried passing smog with a high flow cat downpipes?
From what I know hi flow cat dps will always go bad. Now, for a brand new pair would they pass? I'm not too sure. Maybe someone else can chime in who's used them in the past.
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      02-02-2022, 07:47 PM   #10
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From what I know hi flow cat dps will always go bad. Now, for a brand new pair would they pass? I'm not too sure. Maybe someone else can chime in who's used them in the past.
Guess Iíll just put the stock cats back on before I move there.
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      02-03-2022, 12:38 PM   #11
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Guess Iíll just put the stock cats back on before I move there.
Well here's an advanced "welcome" to the valley. Moving here for work?
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      02-04-2022, 12:32 AM   #12
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Well here's an advanced "welcome" to the valley. Moving here for work?
Yessir, moving there for work. Thanks for the warm welcome lol
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      02-04-2022, 03:43 AM   #13
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Originally Posted by Haideezy View Post
Yessir, moving there for work. Thanks for the warm welcome lol
Well the cost of living is favorable in comparison to S. CA, so that should be a plus. As far as the SMOG check goes they only scan, no tailpipe sniffer, so you may be able to get away with your setup. I have all my cats so I can't say 100%.
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      02-04-2022, 06:11 PM   #14
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Well the cost of living is favorable in comparison to S. CA, so that should be a plus. As far as the SMOG check goes they only scan, no tailpipe sniffer, so you may be able to get away with your setup. I have all my cats so I can't say 100%.
Not sure if I want to keep swapping stock parts back on every year just for smog. My motor has a bunch of miles on it and the turbos are on its last leg. For the cost of rebuilding the motor and new turbos, I might as well just do an LS swap and turn the E90 into a dedicated track car lol.
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      02-05-2022, 02:03 PM   #15
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Quote:
Originally Posted by Haideezy View Post
Has anyone tried passing smog with a high flow cat downpipes?
A 7 dp fix does the job.

Clear the codes, enable the fix, check the state with auto-doctor to assure readiness and pass the test.
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      03-09-2022, 08:30 PM   #16
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Damn, smog is pretty easy here. They don't check for anything lol, my hood didn't even get opened. Definitely going with downpipes fix next time around.
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      03-13-2022, 10:46 AM   #17
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Originally Posted by Haideezy View Post
Damn, smog is pretty easy here. They don't check for anything lol, my hood didn't even get opened. Definitely going with downpipes fix next time around.
Not sure when they stopped popping hoods but they used to in the past. Glad to hear it went well for ya.
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      03-14-2022, 11:28 PM   #18
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Not sure when they stopped popping hoods but they used to in the past. Glad to hear it went well for ya.
Of course my rear turbo starts leaking oil after I put the stock cats back on lol. Pretty sure it was on its way out, the added back pressure probably pushed it over the edge haha.
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      03-15-2022, 08:31 AM   #19
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Of course my rear turbo starts leaking oil after I put the stock cats back on lol. Pretty sure it was on its way out, the added back pressure probably pushed it over the edge haha.
Were you able to bring your tools or are you going to have a shop sort it out? I take mine to Southwest Bimmers for jobs I don't particularly want to do myself.
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      03-15-2022, 08:01 PM   #20
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Were you able to bring your tools or are you going to have a shop sort it out? I take mine to Southwest Bimmers for jobs I don't particularly want to do myself.
I brought a small tool box with me that should have all the tools Iíll need to dig into this. Putting it on a lift this Saturday to pull the downpipes and passenger side motor mount bracket off to thoroughly inspect the leak. Iím hoping itís just a oil feed line or return line leak. Hard to tell with all the crud in the way.
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