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NOx Map-out/Delete vs NOxEM
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01-05-2021, 06:27 AM | #67 | |
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04-10-2021, 02:00 PM | #68 |
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Hi, everyone! I will write my sad experience with the same Noxem emulator and their "great" support. I bought it 6-7 months ago from bimmerprofs.com, unfortunately before reading this topic. Did installation at my local BMW garage. They did all the needed adaptations and resets e.t.c. First few weeks all was great, lower mileage, better idle. But it wasn't long before the first check engine light. Fault 2AF2 about NOx sensor. Support 0 - your fault, mechanics faults, check wiring or something like that. My mechanic checked all the wiring, double-checked, and made adaptations. Still, fault back after 1 week. Again 0 support. Not their fault. So this continued for few more weeks and my mechanic found the guy who took of NOXem and did the programming. The result is a lot of money lost, time, and nerves talking to this shitty support (if we can call it like that). Never recommend this piece of garbage. This all cost me almost 3 times more than programming + my time visiting the mechanic. After reprogramming mileage stays the same, no rough idle, no faults for more than 4 months already.
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04-11-2021, 04:58 AM | #69 | |
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Do you just register a new catalyst every time the code returns each year? |
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04-14-2021, 04:28 PM | #70 |
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Hi all, bit of a noob question here, how does this Nox fault originally manifest itself?
When I picked up my 330i the other week it averaged 35mpg on the long drive home, that was cruise set to 73 and a few squirts along the way, not being a daily driver doing long journeys the fuel consumption is obviously going to tank now but does it throw fault codes or something? |
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01-11-2022, 02:18 PM | #71 | |
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01-24-2024, 12:58 PM | #72 | |
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01-27-2024, 09:41 AM | #73 | |
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01-29-2024, 10:11 AM | #74 | |
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That was from years ago, alot has been learnt since, however my comment at the end ran true, the better solution was Noxem.. It ran stratified because I "Fixed the NOX probe". However it was a false positive which I later replaced with a NOXEM. Coding out removes the DTC, if the underlying nox system then works you run stratified, if doesn't you don't. |
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01-31-2024, 12:10 PM | #75 |
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I assume from the above that you bit the bullet and bought the NOXEM. Can I enquire how long you have had it and the miles covered, any effect on fuel consumption or performance?
My NOXEM code (30DE) arrived at the same time as the HPFP code (29F2) along with others, nostly 3104. Arrived under specific conditions (low rpm, big throttle) and either gave me a yellow light ping with the 29F2 or just ran very rough without 29F2 until I cleared it. Did few hundred miles like that as I tried to determine if I needed to bite the HPFP bullet. Now since 29F2 causes the HPFP to be by-passed and the car to run on the LPFP alone - which it will do quite happily and at quite high speed if that's what you want. However, I don't now how well it manages the mixture under those circumstances and I am just wondering of it has run rich and contaminated the NOX sensor? If not, it is an early life failure since a previous owner had it replaced at about 75k miles (currently 92k). Anway, I am now running on a rebuilt pump which seems to be working fairly well although it took a couple of attempts, but still getting 30DE (NOX) and 3104 (rough running). I was half hoping that if it was a richness contamination problem then maybe it would burnoff over time but it doesn't seem to be working out like that hence the OEM NOX/NOXEM/don't bother time to choose. At time of writing, NOXEM is only about Ł100 less than Cotswold's price for an OEM sensor after carriage and import duty. Alternatively we have the ignore it mode with some loss of performance (?) and higher fuel consumption (?). On a 5 year / 40k mies view, unless I can get something like 10% bettr fuel consumption, ignore it is finacially favourable albeit risking further consequential damage and knackering the ultimate resale value. There's also the issue of dealing with Bimerprofs if the NOXEM is faulty. I have huge amounts of time for Bimmerprofs based on the huge volume of information they have published and shared, however there are some very disgruntled posters here and elsewhere who have had problems with afftersales where the NOXEM has not performed as expected. Decisions, decisions. I have logged the data outputs from the NOX on a test run based on Bimmerprofs instructions for testing the NOX sensor, looks like some intermittent data coming out it and some very high ppms which may indicate it is shot but tbh I am not really sure how to interpret it. Time base is milliseconds so that's a ten minute test run. |
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01-31-2024, 12:38 PM | #76 |
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The other thing I was thinking of doing in line with the idea that the NOX sensor might be fuel contaminated was to clear the adaptations to allow it to relearn the 'fixed HPFP' change. Maybe I should have done it straight away although I don't think a replacement HPFP is in ISTA's list of 'reasons for resetting adaptations'. Can it do any harm?
As an adjuct to my NOX/NOXEM/don't trade-off thoughts in my main post, present fuel consumption is about 420 - 440 to a tank. E61 N53 530i, 2 -3 60mile fast dual carriageway runs per tank mixed with supermarket runs, big boot test runs and slower 5 - 10 mile A/B road runs.. |
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01-31-2024, 12:59 PM | #77 | |
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02-03-2024, 05:23 AM | #78 | |
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As I compared that built quality to original nox sensor gen 01 I would say that appropriate noxem price should not exceed 30% of the original part; and anyway- the cost of labour required to get rid of shitty noxem exceeded dramatically costs of original solution with a full guarantee. A far as I am aware the current original nox sensor gen 05 is very reliable solution and together with updated latest software I-level works far better than first generation of nox system https://www.rajce.idnes.cz/jirka330i...xem/1624644273 |
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02-05-2024, 04:22 PM | #79 |
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Hello,
I've bought E61 with n53b25 engine, and it has no nox system. Nox catalist is cut off and DME is programmed somehow that I've got no errors from nox system. But my car runs only on homogeneous mode. Is there a way to make it run on stratified mode with out adding a NOXem? I'm asking because i have already paid 500 euro for nox deletation (I didnt know about NOXEM back then). |
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02-08-2024, 06:58 AM | #80 | |
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02-11-2024, 12:23 PM | #82 | |
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Originally Posted by ricardnew View Post
Quote: Originally Posted by ricardnew View Post Hi, everyone! I will write my sad experience with the same Noxem emulator and their "great" support. I bought it 6-7 months ago from bimmerprofs.com, unfortunately before reading this topic. Did installation at my local BMW garage. They did all the needed adaptations and resets e.t.c. First few weeks all was great, lower mileage, better idle. But it wasn't long before the first check engine light. Fault 2AF2 about NOx sensor. Support 0 - your fault, mechanics faults, check wiring or something like that. My mechanic checked all the wiring, double-checked, and made adaptations. Still, fault back after 1 week. Again 0 support. Not their fault. So this continued for few more weeks and my mechanic found the guy who took of NOXem and did the programming. The result is a lot of money lost, time, and nerves talking to this shitty support (if we can call it like that). Never recommend this piece of garbage. This all cost me almost 3 times more than programming + my time visiting the mechanic. After reprogramming mileage stays the same, no rough idle, no faults for more than 4 months already. Quote:
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02-14-2024, 06:52 AM | #83 | |
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At the moment the only person I have seen a report from is Jirka, and I think he seems as abrupt as the owner of Noxem. There was a another report and having checked the details I called it as a fake account. Obviously if you do have problem, then the ability to DIY remove it and send it back to Latvia is going to be required - so thats the cross you bare buying such a niche product from a small company. But for me i want to dispose of the NOX cats (or at least try it) so emulation was the only valid choice. |
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02-15-2024, 10:24 AM | #84 | |
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If I install NOxem, without coding removal it could work for 10-150 miles, yes? But if I do a coding removal it should work stratified mode for a longer time?(assuming injectors, probes, etc. are working fine) |
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02-15-2024, 07:39 PM | #85 | |
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Here are my thoughts: No gaunertees but Im pretty confident: 1. You have the no Nox 2. You have tune with Nox delete 3. Nox delte = DTC is turned off 4. Nox systems would still work even through DTC is removed DTC = is just the error being reported in the DME So my recommendation is you buy NOXEM, install it properly - so go through the full instruction online (you need INPA and ISTA), in short use ISTA to register a new NOX sensor, and INPA to delta adaptations, then follow the process to relearn and use inpa to verify success (flywheel bit and long term trims.) SO what I am saying is I expect Noxem to work even though you DTC is turned off. |
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07-19-2024, 03:35 AM | #86 | |
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How does it ended with that map-out and running Stratified charge mode? I am searching for something in Czech too. Thanks |
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07-20-2024, 01:52 PM | #87 | |
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the above is caused by a complexity in maps for n53 (especially all maps linked to a nox system and correct working of both homogenous and stratified mode) which is not deeply understood by most "tuners". It is still possible to map- out the nox system and run the engine only in homogenous but it requires quite extensive re-work of maps (adjustments in all maps linked anyhow to nox sensor as well as adjustments of maps for low-load/ partial load where nox system forced switching between homogenous and stratified mode) however as potential solution it would not be reasonably cheap as I have myself experienced rather shitty noxem with its cheap bosch probe (many users here are reporting it dies after +/-3years 50tkm... no surprise as this standard lambda probe was designed to be for primary cats close to the engine where humidity does not kill it as quickly as in end part of exhaust system where the nox cat is placed; luckily it can be repaired as the bosch probe costs some 80euro plus the cost of exchange) I have turned back to the original solution of nox system as of today myself and most of my clients run on original BMW NOX sensor- generation 5 which has the improved NGK nox probe lasting much longer than generation 1 and works perfectly together with the latest software I-level E89X-18-07-520 from 2018 Regards from Beskydy! |
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08-01-2024, 03:22 PM | #88 |
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Sorry a bit of a late response but the code usually goes by itself after a while and if not I just clear the code and everything runs fine until the next winter when the code comes back. Been doing this for years and can't say I've noticed a drop in performance or MPG. It also passes the emissions test every year.
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