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Old 04-15-2013, 01:55 PM   #81
ac_2007
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The truth is the CEL stay's off and the DME is tricked. But in the past, there where issues with the monitors not in a ready state. the 02 sims DO produce the correct signal, its the monitoring test for when people go take their emissions test that seams to be a hit or miss. I would have mitigated the issue, but my car is lazy at detecting, and I don't have anyone l local to be the ginnie pig
I don't understand exactly what you mean when referring to the monitoring test. For our emissions test, your vehicle must have completed a drive cycle of about minimum 25 miles without CEL. Then your car will come up as ready to test.

In other words, you can't clear the codes outside the testing facility and expect the guy to pass you 5 minutes later. Is this what you're refering to?

Again, I realize that the O2 sim itself does fluctuate the voltage and indicates a functioning O2 sensor by traditional standards, it seems that the BMW DME specifically has an additional algorithm which looks for the lean condition as well. This is not something which can be duplicated with the O2 sim here.

Wideband O2 seems to be the only total solution which will work, but it costs a heck of a lot more money and effort to get operating. All one needs is to complete one "drive cycle" without CEL to pass the test.
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Old 04-15-2013, 02:33 PM   #82
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I don't understand exactly what you mean when referring to the monitoring test. For our emissions test, your vehicle must have completed a drive cycle of about minimum 25 miles without CEL. Then your car will come up as ready to test.

In other words, you can't clear the codes outside the testing facility and expect the guy to pass you 5 minutes later. Is this what you're refering to?

Again, I realize that the O2 sim itself does fluctuate the voltage and indicates a functioning O2 sensor by traditional standards, it seems that the BMW DME specifically has an additional algorithm which looks for the lean condition as well. This is not something which can be duplicated with the O2 sim here.

Wideband O2 seems to be the only total solution which will work, but it costs a heck of a lot more money and effort to get operating. All one needs is to complete one "drive cycle" without CEL to pass the test.
When taking a typical emissions test two things have to be met; CEL off, and the readiness test. As the ECU initially checks to codes, then comes back ok, then the next stage, would be the drive cycle, (usually engine on and off 3 times, and 10-20 miles driven)

What is a Readiness test?
1996 and newer model year vehicles perform up to 11 system tests, depending on the model year, make and model of the vehicle. These tests are performed by readiness monitors. The readiness monitors continuously or periodically check the emission control system and its components. If enough monitors have not completed the check of the emission control system by the time a motorist presents a vehicle for inspection, the vehicle's on-board diagnostic (OBD) computer will not be "Ready" and will fail the inspection. For example, 1996 to 2000 model year vehicles will fail if three or more monitors are "Not Ready" while 2001 and newer model year vehicles will fail if two or more monitors are "Not Ready."

With the e36s, e39, and e46s I have not known anyone with this lean condition that you speak of. Now maybe the MS45 DME or newer vehicles, but not the ones that I've dealt with.

I'm well aware of the wideband solution, but I haven't had a need to tap into one for the stock DME
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Old 04-15-2013, 02:42 PM   #83
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Could be a difference between MS43 vs MS45 DMEs?

To be honest, I heard my fellow Canadian forum member had issues with these O2 sims, but that could be simply due to him not completing a drive cycle. He has a 323 as far as I know, which would be running quite dated DME software (unless he updated)

As long as the CEL is off for the duration of ~week, that's all I would need. Testing the car with EU2 would probably lead to an instant fail, correct? The tester would be looking for emissions equipment which according to the car doesn't exist as I understand it.
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Old 04-15-2013, 02:55 PM   #84
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Could be a difference between MS43 vs MS45 DMEs?

To be honest, I heard my fellow Canadian forum member had issues with these O2 sims, but that could be simply due to him not completing a drive cycle. He has a 323 as far as I know, which would be running quite dated DME software (unless he updated)

As long as the CEL is off for the duration of ~week, that's all I would need. Testing the car with EU2 would probably lead to an instant fail, correct? The tester would be looking for emissions equipment which according to the car doesn't exist as I understand it.
Yes there is several things different on the MS45.

MS45 DMEs are extremely fast and can maintain the engine in realtime, MS43 cannot and adapts over time.

MS45 can utilize Comfort Start.

MS45 will fire the next two cylinders after Ignition Off to burn extra gas as the engine spins down.

MS45 systems have the IAT in the MAF, MS43 IAT is in the manifold.

MS45 can operate an M54 to SULEV standards.

I'm aware of the guy with the 323 issue and thats related to the readiness test, not CEL. I'm willing to work with him to come to a solution. I personally tried flashing to a EU2 firmware, but the flash was not successful, (so I would know the state of the monitoring it does, and how it would work when doing OBD emissions test. The software is buggy, and tedious to get working, my car has become so lazy, that my post 02s are disconnected and they don't even give me a code!
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Old 04-25-2013, 05:10 PM   #85
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Yes there is several things different on the MS45.

MS45 DMEs are extremely fast and can maintain the engine in realtime, MS43 cannot and adapts over time.

MS45 can utilize Comfort Start.

MS45 will fire the next two cylinders after Ignition Off to burn extra gas as the engine spins down.

MS45 systems have the IAT in the MAF, MS43 IAT is in the manifold.

MS45 can operate an M54 to SULEV standards.

I'm aware of the guy with the 323 issue and thats related to the readiness test, not CEL. I'm willing to work with him to come to a solution. I personally tried flashing to a EU2 firmware, but the flash was not successful, (so I would know the state of the monitoring it does, and how it would work when doing OBD emissions test. The software is buggy, and tedious to get working, my car has become so lazy, that my post 02s are disconnected and they don't even give me a code!
I passed my emission test. I was allowed to have 2 incomplete monitors. Cel is back on but have yet to scan codes, will scan and report back
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Old 06-18-2013, 02:07 PM   #86
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Update!! Works great guaranteed working now. This guy is legit he will help you till problems are fixed if you have any
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Old 06-18-2013, 04:23 PM   #87
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Also confirm they are working great. Had to send back 2 times, but in the end he found what was causing my issues... Glad to finally get this taken care of
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Old 06-19-2013, 09:11 AM   #88
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Re: have SEL for post cat 02's? I have a SOLUTION

So to my understandings, the Sim will allow monitors to become ready and won't throw efficiency codes?



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Old 06-19-2013, 06:07 PM   #89
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So to my understandings, the Sim will allow monitors to become ready and won't throw efficiency codes?
I can't personally confirm the readiness test (my car is lazy and reads N/A for it), but for sure no Service Engine Light from them. That is a question to those who have mine installed.
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Old 06-22-2013, 11:53 PM   #90
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have SEL for post cat 02's? I have a SOLUTION

Give me a week of driving and i will check and let you know


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Old 07-12-2013, 03:32 AM   #91
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Old 07-13-2013, 04:15 PM   #92
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OP, PM sent.
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Old 07-26-2013, 09:48 PM   #93
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have SEL for post cat 02's? I have a SOLUTION

OP you have a PM!


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Old 08-03-2013, 09:21 AM   #94
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have SEL for post cat 02's? I have a SOLUTION

Ok so its been a few months and couple thousand miles. Everything working perfect for the 323i guy. All monitors set and everything. Reccommend to all


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Old 08-03-2013, 10:25 AM   #95
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Ok so its been a few months and couple thousand miles. Everything working perfect for the 323i guy. All monitors set and everything. Reccommend to all


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Glad to hear it!
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