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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 01-04-2013, 04:57 PM   #21
straight_beamin
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Old 01-06-2013, 02:58 AM   #22
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On long drive that Plastic will metal and will cause a fire....
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Old 01-06-2013, 10:24 AM   #23
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The plastic? Those little plastic boxes get mounted in the space where the front batter would go. "Drug bin"
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Old 01-06-2013, 10:37 AM   #24
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The drug bin is not where the battery would go. In earlier cars is was where the ABS pump and controller was mounted and it is also for right hand drive cars for the master cylinder as I recall?
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Old 01-06-2013, 10:31 PM   #25
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Ahhh very true!!
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Old 01-07-2013, 02:39 AM   #26
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Quote:
Originally Posted by TrippinBimmer View Post
On long drive that Plastic will metal and will cause a fire....
melt from engine heat? or resistor heat?

Now in my first ones (like pictured on my 1st post) had some concerns with heat in-regards to the resistor producing alot of heat. In-turn the plastic housing would slightly warp. Since then, the resistor would be mounted externally on the box. And now from switching over to military-grade resistors, allows mounting points, therefore the 02 sim box will be sealed, and the resistor completely separate, eliminating heat issues.

Now if your talking about engine heat, I wouldn't be too concerned. unless its next to the exhaust manifold. Keep in-mind that our cars have plastic valve covers. I tell customers to mount the 02 sims in the "drug-bin" (attached picture) for a couple of reasons, puts a longer life on the 02 sim from keeping it away from heat and water. plus room for the customer to mount (supplied self-tapping screws) the resistor.
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Old 01-07-2013, 02:47 AM   #27
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Resistor. Best to mount on metal to displace heat from resistor.
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Old 01-07-2013, 02:53 AM   #28
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Quote:
Originally Posted by TrippinBimmer View Post
Resistor. Best to mount on metal to displace heat from resistor.
yup. The latest version allows customers to mount it to the metal frame of the drug-bin.
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Old 01-07-2013, 03:44 AM   #29
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Quote:
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yup. The latest version allows customers to mount it to the metal frame of the drug-bin.
So how u solve the sap random check?
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Old 01-07-2013, 04:03 AM   #30
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So how u solve the sap random check?
I don't get them, as my car is garaged, and in so cal. But, I did flash my DME for euro tune that apparently doesn't monitor SAP. If that didn't work, I could make a SAP sim.
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Old 01-07-2013, 07:15 AM   #31
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Old 01-07-2013, 07:35 AM   #32
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Quote:
Originally Posted by bimmerguy055 View Post
I don't get them, as my car is garaged, and in so cal. But, I did flash my DME for euro tune that apparently doesn't monitor SAP. If that didn't work, I could make a SAP sim.
For the guys who have sap and don't have a eu tune. Car does random check on highway driving to see cats are working. If dont go lean it will throw a code.

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Old 01-07-2013, 02:25 PM   #33
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Originally Posted by TrippinBimmer View Post
For the guys who have sap and don't have a eu tune. Car does random check on highway driving to see cats are working. If dont go lean it will throw a code.
As far as cats, i haven't had a current or shadow code for over a year, and others whom had installed my 02 sims haven't had that issue that I know of. How ever I did notice 2 years ago when I had just removed the SAP on cold starts (winter in east-coast), my AFR's would be richer, then with SAP installed. I've never tested how the DME actually tests to check if SAP is installed and working. I would think for sure a resistance check would be sent to the DME. I can't see the DME throwing a code for weather its to lean or rich as-long-as all the other sensors are working correctly (especially the MAF) and their are no vac leaks.

Since I'm running a stand-alone ECU, that sort-of piggy-backs off the DME ( controls ignition, timing, injectors etc.), my AFRs are 11.4 at WOT, now if the DME was that smart it would throw a rich code. just a theory...

I can make a SAP sim, if someone wants to be the guinea pig
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Old 01-08-2013, 12:58 AM   #34
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latest version
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Old 01-08-2013, 08:49 AM   #35
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That mine? <3
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Old 01-08-2013, 08:49 AM   #36
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Old 01-08-2013, 10:52 AM   #37
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I hope this works for others!! The post cat O2 failures are downright annoying P0420 and P0430. I tried everything on my former 325xi to defeat those codes and yes I did have the original exhaust / cats on my car. I finally traded in the car as I could not pass PA state inspection without new cats (~$2000)

To the OP, I had contacted you over 6 months ago and was interested in your device, but I recall you had told me it does NOT vary the voltage which it reports back to the DME. Everything I've read indicates the DME wants to see voltage that fluctuates which is indicative of a working O2 sensor right? Intrigued how your product is preventing the CEL codes if it does not vary the voltage?
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Old 01-08-2013, 11:05 AM   #38
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This will not pass emissions on those inspection sites that look for codes. You will still have codes. The only real solution is the LC-1. Look here http://forum.e46fanatics.com/showthread.php?t=713645

I'm still boggled as to why everyone tries these simulators and not the LC-1...
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Old 01-08-2013, 11:38 AM   #39
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Quote:
Originally Posted by 2000e46bmw323i View Post
That mine? <3
It will be very similar, remember, I have to make these by hand.

Quote:
Originally Posted by Mark M View Post
I hope this works for others!! The post cat O2 failures are downright annoying P0420 and P0430. I tried everything on my former 325xi to defeat those codes and yes I did have the original exhaust / cats on my car. I finally traded in the car as I could not pass PA state inspection without new cats (~$2000)

To the OP, I had contacted you over 6 months ago and was interested in your device, but I recall you had told me it does NOT vary the voltage which it reports back to the DME. Everything I've read indicates the DME wants to see voltage that fluctuates which is indicative of a working O2 sensor right? Intrigued how your product is preventing the CEL codes if it does not vary the voltage?
Originally I 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 (taking the 02 sensor out of the exhaust flow) was.

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 (witch I currently use), 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.


Quote:
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This will not pass emissions on those inspection sites that look for codes. You will still have codes. The only real solution is the LC-1. Look here http://forum.e46fanatics.com/showthread.php?t=713645

I'm still boggled as to why everyone tries these simulators and not the LC-1...
I will have to respectfully disagree . I have made dozens of 02 sims by now, and everyone has successfully turned off their "Service Engine Soon" Light.

See http://forum.e46fanatics.com/showthread.php?t=925668 , one of my customers writing a review about my 02 sims, along with another with-in the thread who also had success
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Old 01-08-2013, 02:02 PM   #40
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Quote:
Originally Posted by daewon774 View Post
This will not pass emissions on those inspection sites that look for codes. You will still have codes. The only real solution is the LC-1. Look here http://forum.e46fanatics.com/showthread.php?t=713645

I'm still boggled as to why everyone tries these simulators and not the LC-1...
The only point of these is to eliminate the codes. Difference is this is a complete O2 sim kit, with wiring for the heater circuit.

What reason would you have for saying they donít work?
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