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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > NOx Map-out/Delete vs NOxEM



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      10-13-2019, 07:59 AM   #45
jirka330i
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Quote:
Originally Posted by Will_460cs View Post
Aged sensor - you can buy the sensor separately,you need a 8 wire sensor and stainless crimp clamps... in Germany there used to be a company called NOX sensor shop and they sold a kit with all the bits..
I do not think you can get a good and reliable nox probe on the market...ngk as the major player controls the distribution to the big boys like continental etc.
However, the replacement probe with 8 wires could be as good as the bosch probe in noxem...if it measures lambda like bosch and delivers an electric signal in the range similar to ngk probe, and will be able to communicate with continental unit then it would be a good deal I guess.
As for the sonic cleaning ...I went to guys who succesfully clean wideband probes but the operation did not revive my old probe...and I was also told that due to the fact that nox probes have rhodium inside which is ultra sensitive the success was a mission impossible...
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      10-13-2019, 08:34 AM   #46
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Originally Posted by schriss View Post
I don't think it's a battery, if it needed to save some data for power-loss situation thats done with eproms I think.
I might put loads of silicon grease on my NOXEM when we install it It does seem like it's closed shut for good, can't even see any gap between plastic and metal.
Re original NOX sensors they just last for a given mileage, like 100k. Sensor is the problem, not electronics, sensor simply clogs up more and more, or so I read. Mine is like that. INPA shows Offset value outside of range. Also it reports over 200ppm of nox when driving, not sure if that's supposed to be so much.
I would not put any silicone on noxem....you risk a refusal of the warranty in case you would send it back with a claim....in my case the were trying to find any reason to make the claim complicated
It should be them delivering the product fit to the purpose as they are quite critical themselves on the others
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      10-13-2019, 08:44 AM   #47
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Quote:
Originally Posted by jirka330i View Post
I would not put any silicone on noxem....you risk a refusal of the warranty in case you would send it back with a claim....in my case the were trying to find any reason to make the claim complicated
It should be them delivering the product fit to the purpose as they are quite critical themselves on the others
Same as insurance companies, makes sense. I'll just put it in as it is.
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      11-07-2019, 06:00 AM   #48
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Originally Posted by aaronblack View Post
From everything that has been said it seems that the most reliable options (subjective) in order are:

1- Map-out
2- NOxEM
3- OEM NOx

NOxEM seems to have some quality issues, yet some have also had great success! Map-out seems better as it has no sensors/ecu etc yet no remapper has confirm all 3 stages in any my emails!

I'll call Map-tech and see whether they'll confirm the 3 stages.
As I have not heard any satisfactory reply from UK tuners, I contacted couple of German tuners and at least 2 confirmed proven Nox Map-out solution incl. references; however not willing to sell the respective file (respectively adjust my MSD80original file) and send it to me...only possibility to come there and do it in their garage....and as it was north of Germany (Hannover) I continued my search and found a guy here in Czech who is more of a car software engineer (specialized in bmw and vag) rather than a tuner; he confirmed ability to do map-out as well for N53/MSD80. He did a read-out of my ecu last weekend (free of charge) and promised to prepare an adjusted file by the end of November...so if he succeeds I will be running nox free car in 2020 and can exchange the oem middle pipe to something like supersprint . The good thing here is that if the solution does not work I can get back the original file as well as 80% of the money...so the risk is less than 50eur
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      11-09-2019, 10:44 AM   #49
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How do you then flash the adjusted file? And what cable needed?
I wonder what is the difference between NOX map-out and NOXEM in relation to emissions. I wonder if my car with NOXEM will pass them at all... I do think they measure CO2 only, not nox on petrol cars but who knows.
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      11-09-2019, 11:18 AM   #50
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Correct, co2 only. N53 NOX is less than a current 520d
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      11-11-2019, 12:47 PM   #51
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Quote:
Originally Posted by schriss View Post
How do you then flash the adjusted file? And what cable needed?
I wonder what is the difference between NOX map-out and NOXEM in relation to emissions. I wonder if my car with NOXEM will pass them at all... I do think they measure CO2 only, not nox on petrol cars but who knows.
You need Kess for flashing....ideally original as msd80 is a bit "fragile"...msd81 is much better

both nox map-out and emulator are equal in relation to emissions. Even if they measured nox emissions for petrol cars I think there is a good chance to pass with map-out as highest nox emissions are in the stratified mode while in the homogenous they are very low; I wonder if the inspectors are so educated in these modes of one specific n53 engine from bmw...would be good to know what approach they have. In my country there is definitely no nox emission measure for petrol engines with Euro5...
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