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      04-25-2017, 03:32 PM   #1
bmwlover0725
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O2 readiness problem

Surprisingly enough, there aren't a ton of topics on this that I found specific to the O2 readiness. My tune obviously has catalyst efficiency off so I know that wont complete. I've replaced the problem sensors and the car runs fine with no codes since I reset it last night. My only question is that by running through a standard drive cycle, how long on average does it take to complete? Does it take longer after resetting it? I also reset my adaptations when I cleared the codes. I've probably done about 35 miles with around 20 of them being highway trying to follow the standard procedure for setting it.

Is there any way that this monitor could be turned off with catalyst? I don't see how it could be since it's for monitoring the AFR and my rear o2's are switching fine and have perfect fuel trims...

EDIT: I forgot to mention that my DSC is throwing D354/355/356 - but it isn't causing any trouble at all, isn't currently present - and I'm assuming it doesn't affect monitors setting for o2.
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      04-25-2017, 03:41 PM   #2
Mike Benvo
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Depending on your tune, o2 will not complete with missing cats.
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      04-25-2017, 03:49 PM   #3
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Quote:
Originally Posted by Mike Benvo View Post
Depending on your tune, o2 will not complete with missing cats.
Lovely. Well it's a Dinan one and I have no idea about them. Is there any way for me to tell?
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      04-25-2017, 05:12 PM   #4
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Can you post a snapshot of which monitors you have complete and incomplete? Is it just O2?
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      04-25-2017, 05:44 PM   #5
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Quote:
Originally Posted by JsL View Post
Can you post a snapshot of which monitors you have complete and incomplete? Is it just O2?
Here are three shots. All of the monitors.
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      04-25-2017, 05:51 PM   #6
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Wonderful... they're upside down!
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      04-25-2017, 06:58 PM   #7
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I just googled "dinan o2 readiness tune" and the first item that popped up had the same montiors you have incomplete on a Dinan M5. I don't they they will ever complete with the dinan tune.
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      04-25-2017, 09:39 PM   #8
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I'm having the same issue. :/ Mike, will the oxygen sensor monitor and catalyst monitor remain inc. if we have one of you BPM stage 2 tunes?
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      Today, 12:16 PM   #9
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Update:

I spoke with Dinan tech support yesterday and got what SHOULD have been an answer. I was explained how the tunes are created and what parameters are changed. Basically they make the catalyst efficiency monitor impossible to start through an unacheivable position in throttle/RPM. I was told that the O2 monitor diagnostic is not turned off and that after driving more, the monitor should set without trouble leaving ONLY catalyst efficiency incomplete. As of now, I've driven over 100 miles. A lot of it was above 60MPH, but almost all of it was driving like a grandma. Honestly this tune has seriously improved throttle response and a slight power gain came from it. If I'm pleased with it's performance, I can't imagine what a BPM tune is like. Bottom line, I'm waiting for a call from Dinan right now to see if I can sort this out and as far as I'm concerned they have two options. The first one is to have my Dinan dealer check this out to see if something is just wrong and the second is for me to dispute the charge because the damn thing didn't do what I was told at all and is completely worthless. The second will be followed by a purchase from BPM who actually answers the phone every time I call. I'll keep everyone posted.
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      Today, 01:53 PM   #10
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Some drivers go 100s of miles without ever doing a proper drive cycle. It is very specific and takes only 15-20 miles if done correctly. That is the only way to guarantee getting all monitors to readiness.

Here is one version of it: I used done similar and had success.

http://www.m3post.com/forums/showpos...91&postcount=2
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      Today, 10:49 PM   #11
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O2 will not go ready on this car with no cats, even if they don't change any o2 settings. That's just the way the calibration/code is written.

With no cats and a DINAN tune, I would expect o2 and cat to always be not ready.

I think might have received a pm from you about this and I will try to reply by tomorrow, sorry have been swamped
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      Today, 11:22 PM   #12
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The drive cycle stops if you exceed 3000rpm, 60mph or make large fluctuations in throttle. You mentioned driving over 60mph most of the time, that stops the monitor testing.
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