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BMW 3-Series (E90 E92) Forum
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NOx Map-out/Delete vs NOxEM
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10-13-2019, 07:59 AM | #45 | |
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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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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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Current: 2017 F30 330e PHEV
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11-07-2019, 06:00 AM | #48 | |
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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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11-11-2019, 12:47 PM | #51 | |
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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... Last edited by jirka330i; 01-11-2020 at 09:11 AM.. |
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01-18-2020, 04:45 AM | #52 | ||||
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11-02-2020, 03:47 PM | #53 | ||
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11-02-2020, 03:50 PM | #54 | |||
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Did you get this up and running be interested to Know the outcome |
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12-03-2020, 08:44 AM | #55 | |||
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I recently purchased a 2007 325i N53 3.0L (with MT6) and just discovered the NOX sensor errors. Am debating which route to go: 1) OEM NOX — of course my local Indy and BMW specialist both recommend OEM NOX sensor (at a cost of nearly £500 with labor) - they claim the NOXEM will cause issues down the line with the cats. 2) NOX & secondary cat Delete — have spoken to both Maptech and Promap and it's around £200 on top of the Stage 1 remap. So basically remap + NOX for same price as just fitting the OEM 3) NOXEM - it seems quality of production may be an issue. And not sure who I could get to fit it. The remap and NOX delete option seems most interesting route given the performance boost — although I've not got INPA nor the knowledge of how to do the resets you talk about. Any further suggestions would be more than appreciated. Thanks ! |
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12-03-2020, 05:05 PM | #56 |
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I would personally talk to the remappers and confirm with them that stratified mode works with the nox delete. I wasn't able to get them to confirm this and since I've sold the car.
However, I think the safest option is NOxEM unless you get a confirmation from the tuner and after the delete you check with INPA etc. If the car is running stratified. |
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12-03-2020, 07:41 PM | #57 | |
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My only other concern with the delete is that you can't easily go back from what I understand? |
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12-08-2020, 03:26 AM | #58 | ||
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I had the same issue with all of them. They all replied fairly quickly regarding price etc. However once I questioned them about stratified mode, I got no response. |
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12-11-2020, 04:13 AM | #59 | |||
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I did find a couple companies selling NOX sensors at a much lower price. Wonder if anyone has used or know if they're any good? Xenons4U (in UK) https://xenons4u.co.uk/nox-sensors/bmw-nox-sensors.html FSP Performance (Dutch company) https://www.noxsensorshop.com/nox-se...w-nox-sensors/ There are also a couple of local U.K. shops on EBay selling "Original BMW" sensors for nearly £200 less than the price from BMW. https://www.ebay.co.uk/itm/Original-...-/163373471610 This one has 9 positive reviews and appears to have sold 95 of them. I messaged one of the people who left review and he said it worked perfectly, cleared his codes and he would recommend. Curious if anyone else has experience buying OEM from EBay? Does make you wonder how they can sell them so cheaply. Although this makes the NOXEM option less attractive if an OEM replacement is about same price. |
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12-13-2020, 04:25 PM | #60 | ||||
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The ebay sensors are China copies and are not genuine - perhaps they are just relaying a signal back to the dme without actually reading Nox etc - hard to tell with the right equipment. The replacement sensors from Nox sensor shop etc appear to be replacement genuine Nox sensors. |
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12-13-2020, 04:52 PM | #61 | |
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12-16-2020, 10:26 AM | #62 | ||||
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Or Amazon at least they are easy on returns |
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12-16-2020, 09:05 PM | #63 |
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You might have more luck asking the tuners if they code out the DTC (basically disable the error code) or if they use a third party tool like Swiftec (which emulates the sensor values and would most likely support stratified).
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12-21-2020, 01:28 PM | #64 |
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I can answer a few questions about the OEM NOX Sensor.
Buying a complete new unit in unnecessary. All you need to do is replace the NOX probe with any NGK 8 wire sensor. For me I found a cheap second hand BMW NOX sensor from an X5 4.0d. I cut the old sensor off which had a failed heating element and cut the 'new' sensor off, soldering the new sensor on to the car. Then registered a new NOX sensor and deleted adaptions. The solution worked perfectly and the car is showing no errors for the NOX sensor itself. It worked in all modes etc etc. BUT before spending any money or time on the NOX sensor you need to see if you have the 30E9 code for NOX Catalyst aging. I had this code and read on the internet it would eventually come back even after registering a new NOX cat and fixing any issues with the sensor. I thought for £40 I would try a bottle of cataclean, replacement of the sensor and registering a new cat to see if this was true. 8 months (6000 miles) I can tell you the aging catalyst is back. The car worked perfectly and switched modes as it should, did regens etc all normally until one day it stopped going into stratified mode with no faults present and approx 1000 miles later, 30E9 is back. So the long and short of it is, if you have 30E9 you have no other option other than Noxem, replacement of the NOX catalysts or a remap. Replacing the sensor for a working one at this point is only a short term solution. Personally I will be going down the route of NOXEM. I do not think there is anyone that understands these engines in enough detail to sort them out properly with a remap. |
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12-21-2020, 06:04 PM | #65 | |
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01-05-2021, 04:28 AM | #66 |
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Yes, multiple times. But there is no NOX in the catalyst to regen as the car does not enter stratified mode so the value is fixed at about 170mg.
I only ever did one manual regen but it wasn't really necessary. The car sorted itself out fine and never threw me the sulphised code. I checked the NOX concentration regularly using Carly and after a long drive it was always sub 200mg. |
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