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NY / NJ / CT
Have you seen another BMW while driving around in your area? Maybe you can find their car in the E46Fanatics Garage!
NY NJ CT

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Old 12-26-2012, 12:51 PM   #21
zhenkaaaM3
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I may be interested in these as well, as soon as I get my car back!!!
Pm me when ready
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Old 12-30-2012, 09:53 AM   #22
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Pm sent
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Old 12-30-2012, 10:47 AM   #23
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Pm sent
Didnt get anything
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Old 12-30-2012, 11:14 AM   #24
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How much for the simulor coe readers?

Sent from my SPH-D700 using Bimmer App
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Old 12-30-2012, 04:17 PM   #25
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Sorry I sent you a private message that how much are they and when can I get them cause I needed inspection lmk thru pm thanks my car don't pass cause of cat problems
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Old 01-07-2013, 01:20 AM   #26
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More information on the 02 sims

Hey Eugene,

Just found this thread. thanks buddy!

LEGAL NOTE: These are solely for "off road use" if you plan on using them to pass emissions, your accountable, and I'm not responsible for what you do with the 02 emulators. I will just be responsible for the emulators to do their job and work as described.

More information on the 02 sims:

HOW do they work?

When attempting to simulate a post 02 sensor or down-stream sensor, there are two areas that need to be emulated; the voltage the ECU sees ranges from .1v (lean) to ~.9v (rich) the second area is heater part, thats built-in to the 02 sensor (used to accurately read the Air/Fuel ratio or AFR)

What I have done is used a resistor and capacitor to show the ECU a consistent voltage (.415v) witch seams to keep the ECU happy and keep the car in open-loop right before the closed-loop mark (.45v) so logically speaking the car stays at a perfect balance between rich and lean ~ 14.7 AFR. This method I found out was a hit or miss, as the spark plug defouler method.

A more complex circuit would need to be built so the ECU does not flag the consistent voltage. This would call for a oscillating signal generator, that would oscillate the voltage signal from .11v to .81v greatly mimicking what a typical working post-cat 02 sensor should be doing, and in-turn, keeping the ECU happy.

For the heater, I now put a large military-grade resistor in-line, between the heater wires of the 02 sensor, keeps the ECU from throwing a fault for the heater sensor.

how do I order them?

Since I do this on the side, and haven't found a vender to produce 02 sensor connectors, there will be 3 ways to go about it:
1. Send me both post-02 sensors ( I cut them 2" from the sensor, then include them when shipped back)
2. Cut off 2-3" from the connectors (see attached diagram)
3. You don't send me anything, I just make the 02 sim (with leads) and you hard-wire it to the 02 sensor wires.

Please note for number 3: You will need a multimeter to find the polarity in the same color wires(white) or follow wires to the correct color at the other end of the connector. Also if the polarity is not correct, the 02 sim can be fried!

PM me if you would like to order them!


ABOVE is a video of live data (on BMW e46) showing the difference between the more complex slim oscillating (02B1S2) for Bank 1 sensor 2. The simple, consistent voltage (02B2S2) for bank 2 sensor 2.
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Old 01-07-2013, 09:40 AM   #27
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Old 01-07-2013, 11:21 AM   #28
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i need an emissions as my car will never pass
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Old 01-08-2013, 12:00 AM   #29
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i need an emissions as my car will never pass
PM me
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Old 01-08-2013, 12:01 AM   #30
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Latest version
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Old 01-19-2013, 11:23 AM   #31
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pm'd
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Old 03-04-2013, 02:56 PM   #32
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I bought these and p0161 and p0141 vanished for 2 days. Now p0141 is back and inspection is in 5 days!! What to do??!!
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Old 03-04-2013, 06:04 PM   #33
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When I drove Caddy's I used the same resistor's to disable the suspension error messages after swapping the air & magnetic strut system for a passive setup.
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Old 03-04-2013, 07:32 PM   #34
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Originally Posted by 2000e46bmw323i View Post
I bought these and p0161 and p0141 vanished for 2 days. Now p0141 is back and inspection is in 5 days!! What to do??!!
I have PMed a solution
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Old 03-04-2013, 08:06 PM   #35
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Will report back guys! Seems to definately know his stuff!
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Old 03-04-2013, 08:56 PM   #36
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Fixed the wiring hiccup! Works like a dream. Pull the trigger if you are considering because these things work!
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Old 03-04-2013, 10:11 PM   #37
zhenkaaaM3
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Fixed the wiring hiccup! Works like a dream. Pull the trigger if you are considering because these things work!
There ya go!
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Old 03-05-2013, 06:22 AM   #38
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Woot woot! So happy
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Old 03-05-2013, 09:28 AM   #39
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Wait -_-. Isnt there still a visual? Check for cats n crap or smoke from exhaust. I read that if they see smoke or no cats they wont even test it -_-
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Old 03-05-2013, 09:55 AM   #40
zhenkaaaM3
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Nobody ever looked if i had em in new york so... i dont think so
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