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      10-09-2019, 05:48 AM   #23
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Following this with interest.
Have a 2007 330i N53, what are the best plugs to use on a standard car, my local motor factor has quoted NGK ZKBR7AP-HTU which are 3 prong plugs.

buying a set today and would like to hear what you have used what BMW use, (I have asked my local main dealer they use NGK but would not tell me code or how many prongs)
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      10-09-2019, 04:14 PM   #24
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Quote:
Originally Posted by surrey130i View Post
Following this with interest.
Have a 2007 330i N53, what are the best plugs to use on a standard car, my local motor factor has quoted NGK ZKBR7AP-HTU which are 3 prong plugs.

buying a set today and would like to hear what you have used what BMW use, (I have asked my local main dealer they use NGK but would not tell me code or how many prongs)
I used NGK ZKBR7A-HTU, pretty sure it's oem
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      10-10-2019, 01:38 PM   #25
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Quote:
Originally Posted by jirka330i View Post
Well....both tuners mentioned above were quick to reply on remap pricing but none of them able or willing to answer question whether remap allows all 3 modes of n53. The only way to find that is then the practical experience and observing with INPA which can monitor switching of the modes...anyone did this already?
See my earlier posts, confirmed as working in all 3 modes with nox delete..
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      10-11-2019, 08:09 AM   #26
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Quote:
Originally Posted by Will_460cs View Post
See my earlier posts, confirmed as working in all 3 modes with nox delete..
Thanks a lot Will! I read your posts...just wanted to double check (that the 3 modes worked after nox delete and decat..) and know your remap is maptech...so I will try to speak to them
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      10-11-2019, 06:30 PM   #27
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Quote:
Originally Posted by jirka330i View Post
also the body of noxem which looks robust at the first sight might be another long term weakness...the cover is glued by some kind of silicone and I wonder how long this keeps the board of noxem protected from extreme conditions...
My NOXEM has 4 screws on the cover, does that not hold the cover?
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      10-12-2019, 12:55 AM   #28
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Quote:
Originally Posted by schriss View Post
My NOXEM has 4 screws on the cover, does that not hold the cover?
that is a good question...if you drive on dry roads all year round it should be all right, but in my case in real central european conditions with salt on the roads...not sure

the 4 screws are there to hold the black box together...what I think is more important is the seal (how long does your white silicone last in the real conditions in a shower bath?)

see a picture of original bmw nox herebelow...this is what I think is good industrial quality build...after more than 10 years on the road and it was definitely watertight...it was a challenge to open it...the first level of black seal kept the body and cover firm together..and inside- everything suffused by transparent elastic insulating mass; so I guess the electronic part would survive even very long washing machine program :-) ....compared to noxem board covered by kind of a of cheap chinese asphalt applied in a thin fragile layer...
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      10-12-2019, 04:43 AM   #29
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Think I'm going to get the OEM nox.

Anyone know what goes wrong with the original nox sensors? I wonder if its a simple mosfet fail or a (more likely) aged sensor in which case perhaps replacing the sensor head is possible...

Edit what is that component bottom right, looks like it could be a battery?
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      10-12-2019, 06:10 AM   #30
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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.
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      10-12-2019, 12:00 PM   #31
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Mines only lasted 65k and many fail earlier than that
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      10-12-2019, 04:03 PM   #32
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Quote:
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.
My 330i only has 43k miles yet the original nox has failed already! Some last upwards of 100k yet others like mine with only 1 previous owner has failed already
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      10-12-2019, 04:52 PM   #33
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What I read was 100k average in km. That translates to 62k miles I think.
But all that is just average.
What probably matters is what was going on with the car, was he driving a lot with some codes causing to burn more fuel (and clog up the sensor sooner) or with cat regen mode kicking on often yet never finished because it was driven in city mostly and rarely highways. Just my guesses there.
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      10-12-2019, 05:03 PM   #34
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In which case arguably they are not fit for purpose
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      10-12-2019, 06:28 PM   #35
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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.
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      10-13-2019, 02:14 AM   #36
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Quote:
Originally Posted by Dormermike View Post
In which case arguably they are not fit for purpose
This is probably a weakness of early oem nox (generation 01...02..) and I heard that in some countries (Germany...) BMW garages were exchanging them at a courtesy prices; the new oem nox generation from continental is 05 and is said to last much longer (150tkm or so). As far as I know from the other side ...VAG Group uses bosch nox sensors wich are designed to last 300tkm
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      10-13-2019, 02:16 AM   #37
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Quote:
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.
Please let us know...I already had experience 3) and 2)...so cant wait to get the last one as well :-)
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      10-13-2019, 04:25 AM   #38
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Quote:
Originally Posted by jirka330i View Post
This is probably a weakness of early oem nox (generation 01...02..) and I heard that in some countries (Germany...) BMW garages were exchanging them at a courtesy prices; the new oem nox generation from continental is 05 and is said to last much longer (150tkm or so). As far as I know from the other side ...VAG Group uses bosch nox sensors wich are designed to last 300tkm
Where did you hear that info

My 2012 n53 is one of the last n53 engines so presumably latest sensor but still failed at 65k miles.
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      10-13-2019, 04:43 AM   #39
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Quote:
Originally Posted by Dormermike View Post
Where did you hear that info

My 2012 n53 is one of the last n53 engines so presumably latest sensor but still failed at 65k miles.
a friend of mine (e92 n53 2009) who lives in CZ but was going to a bmw garage in regensburg where they changed him (already outside a warranty) both hpfp and nox sensor at a fee below 100eur. I have myself n53 2009 and nox sensor was generation 01 so I guess yours would be generation 02 or 03....which was probably failure too. The info on generation 05 came from my mechanic and probably comes from some internal materials. The info about bosch nox sensors comes from a vw mechanic as they do not enjoy such a great business on exchanging that part...
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      10-13-2019, 06:52 AM   #40
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Quote:
Originally Posted by Dormermike View Post
Think I'm going to get the OEM nox.

Anyone know what goes wrong with the original nox sensors? I wonder if its a simple mosfet fail or a (more likely) aged sensor in which case perhaps replacing the sensor head is possible...

Edit what is that component bottom right, looks like it could be a battery?
Quote:
Originally Posted by Dormermike View Post
Think I'm going to get the OEM nox.

Anyone know what goes wrong with the original nox sensors? I wonder if its a simple mosfet fail or a (more likely) aged sensor in which case perhaps replacing the sensor head is possible...

Edit what is that component bottom right, looks like it could be a battery?

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..
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      10-13-2019, 06:54 AM   #41
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Quote:
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.
Quote:
Originally Posted by Dormermike View Post
Think I'm going to get the OEM nox.

Anyone know what goes wrong with the original nox sensors? I wonder if its a simple mosfet fail or a (more likely) aged sensor in which case perhaps replacing the sensor head is possible...

Edit what is that component bottom right, looks like it could be a battery?
Quote:
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.

They also respond to ultra sonic cleaning
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      10-13-2019, 06:58 AM   #42
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Quote:
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.
Quote:
Originally Posted by Dormermike View Post
Think I'm going to get the OEM nox.

Anyone know what goes wrong with the original nox sensors? I wonder if its a simple mosfet fail or a (more likely) aged sensor in which case perhaps replacing the sensor head is possible...

Edit what is that component bottom right, looks like it could be a battery?
Quote:
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.
Quote:
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.

I doubt any will confirm it, they do not have the in-depth knowledge or the engine and the ecu.

Please make sure you have inpa and understand how to reset adaptations.. adaptations will also cause issues with running all 3 modes.. msd80 is ultra sensitive, also confirm which firmware you are running bimmerproffs have a really good page on tests they have do e with different firmware.
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      10-13-2019, 07:01 AM   #43
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Quote:
Originally Posted by jirka330i View Post
Quote:
Originally Posted by Dormermike View Post
In which case arguably they are not fit for purpose
This is probably a weakness of early oem nox (generation 01...02..) and I heard that in some countries (Germany...) BMW garages were exchanging them at a courtesy prices; the new oem nox generation from continental is 05 and is said to last much longer (150tkm or so). As far as I know from the other side ...VAG Group uses bosch nox sensors wich are designed to last 300tkm
Quote:
Originally Posted by Dormermike View Post
Think I'm going to get the OEM nox.

Anyone know what goes wrong with the original nox sensors? I wonder if its a simple mosfet fail or a (more likely) aged sensor in which case perhaps replacing the sensor head is possible...

Edit what is that component bottom right, looks like it could be a battery?
Quote:
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.
Quote:
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.
Quote:
Originally Posted by jirka330i View Post
Quote:
Originally Posted by Dormermike View Post
In which case arguably they are not fit for purpose
This is probably a weakness of early oem nox (generation 01...02..) and I heard that in some countries (Germany...) BMW garages were exchanging them at a courtesy prices; the new oem nox generation from continental is 05 and is said to last much longer (150tkm or so). As far as I know from the other side ...VAG Group uses bosch nox sensors wich are designed to last 300tkm

The factory sensor n53 is always continental
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      10-13-2019, 07:06 AM   #44
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Quote:
Originally Posted by aaronblack View Post
Quote:
Originally Posted by Will_460cs View Post
Quote:
Originally Posted by aaronblack View Post
Quote:
Originally Posted by Will_460cs View Post
Quote:
Originally Posted by aaronblack View Post
Quote:
Originally Posted by Will_460cs View Post
Coding out out the NOX will enable it to run stratified... This is how my car is running ;-)

325i, 3l, 3 stage manifold, remap with nox delete running stratified with a slightly broken nox sensor!

With 325i is no brainer to remap. 330I is marginal BHP improvement maybe 10-15bhp...

To really make it work and sound better with either NOXEM or Remap/NOX code out it would be best to remove the exhaust mid section with the Nox cat as both solutions are fooling the ecu in different ways..
So which would you advise/recommend Will? I've already deleted the secondary cats with the Direnza pipe as you advised!

NOxEM and Maptech NOx delete both cost about the same! Just not sure which method to go for (reliability, efficiency etc.)

Maptech charges £70 extra for a rolling map for the 330i which although don't add much I think it may improve the throttle response!
Quote:
Originally Posted by Tr1ppy View Post
Quote:
Originally Posted by Will_460cs View Post
Coding out out the NOX will enable it to run stratified... This is how my car is running ;-)

325i, 3l, 3 stage manifold, remap with nox delete running stratified with a slightly broken nox sensor!

With 325i is no brainer to remap. 330I is marginal BHP improvement maybe 10-15bhp...

To really make it work and sound better with either NOXEM or Remap/NOX code out it would be best to remove the exhaust mid section with the Nox cat as both solutions are fooling the ecu in different ways..
Interesting, thats exactly what I want to do with my 330i (not much gain I know); code out the Nox sensor and remove secondary cats.

Where did you get yours remapped if you dont mind me asking? And did you get a before/after printout?
If it was me I'd remap it, mid range response was allot better. But it's all subjective.. I'd also make sure I had some new plugs in and check my coil packs to make sure there in good shape .. ie no arcing marks discolouration etc
Cheers for that! Has your mpg improved too? As most with NOxEM claim around 40mpg easy on steady runs?

Just trying to see if the remap makes the car as efficient as NOxEM! Specially as bimmerprof claims that NOxEM improves efficiency up-to 10% over a fully working OEM NOx system!
Quote:
Originally Posted by jirka330i View Post
Quote:
Originally Posted by Will_460cs View Post
If it was me I'd remap it, mid range response was allot better. But it's all subjective.. I'd also make sure I had some new plugs in and check my coil packs to make sure there in good shape .. ie no arcing marks discolouration etc
Hallo. I have followed your discussion in this thread with high level of interest as I have become myself a victim of noxem marketing in May of this year and "enjoyed" the experience of claiming its failure (still think that it was originally very good product but when costs saving launched and production outsourced somewhere to people republic of xy it became a questionable and tricky piece of s....t). Now, I have back in the car but knowing many construction details, I do not dream about its lifetime and prepare myself for the remap/ nox system delete. As I checked in my country there are already few garages doing nox delete....but only version which allows the engine to run in homogenous mode (which is also not bad because emissions in this mode are apparently low compared to stratified charge....which was designed for fuel economy but its emissions ruin costly and fragile nox system ), but it seems that some of you have enjoyed remap which allows both homogenous and stratified modes. Can you please provide some details on the remap? Thank you
Quote:
Originally Posted by aaronblack View Post
Quote:
Originally Posted by Will_460cs View Post
Quote:
Originally Posted by aaronblack View Post
Quote:
Originally Posted by Will_460cs View Post
Coding out out the NOX will enable it to run stratified... This is how my car is running ;-)

325i, 3l, 3 stage manifold, remap with nox delete running stratified with a slightly broken nox sensor!

With 325i is no brainer to remap. 330I is marginal BHP improvement maybe 10-15bhp...

To really make it work and sound better with either NOXEM or Remap/NOX code out it would be best to remove the exhaust mid section with the Nox cat as both solutions are fooling the ecu in different ways..
So which would you advise/recommend Will? I've already deleted the secondary cats with the Direnza pipe as you advised!

NOxEM and Maptech NOx delete both cost about the same! Just not sure which method to go for (reliability, efficiency etc.)

Maptech charges £70 extra for a rolling map for the 330i which although don't add much I think it may improve the throttle response!
Quote:
Originally Posted by Tr1ppy View Post
Quote:
Originally Posted by Will_460cs View Post
Coding out out the NOX will enable it to run stratified... This is how my car is running ;-)

325i, 3l, 3 stage manifold, remap with nox delete running stratified with a slightly broken nox sensor!

With 325i is no brainer to remap. 330I is marginal BHP improvement maybe 10-15bhp...

To really make it work and sound better with either NOXEM or Remap/NOX code out it would be best to remove the exhaust mid section with the Nox cat as both solutions are fooling the ecu in different ways..
Interesting, thats exactly what I want to do with my 330i (not much gain I know); code out the Nox sensor and remove secondary cats.

Where did you get yours remapped if you dont mind me asking? And did you get a before/after printout?
If it was me I'd remap it, mid range response was allot better. But it's all subjective.. I'd also make sure I had some new plugs in and check my coil packs to make sure there in good shape .. ie no arcing marks discolouration etc
Cheers for that! Has your mpg improved too? As most with NOxEM claim around 40mpg easy on steady runs?

Just trying to see if the remap makes the car as efficient as NOxEM! Specially as bimmerprof claims that NOxEM improves efficiency up-to 10% over a fully working OEM NOx system!
Where and how are they claiming that?
So when I read through bimmerprofs website
they claim that by delaying cat regeneration they are able to improve the economy by 10% compared to a fully working nox system.

I'am skeptical myself as of course they will say and do whatever for people to buy their product!
Quote:
Originally Posted by Dormermike View Post
Think I'm going to get the OEM nox.

Anyone know what goes wrong with the original nox sensors? I wonder if its a simple mosfet fail or a (more likely) aged sensor in which case perhaps replacing the sensor head is possible...

Edit what is that component bottom right, looks like it could be a battery?
Quote:
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.
Quote:
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.
Quote:
Originally Posted by jirka330i View Post
Quote:
Originally Posted by Dormermike View Post
In which case arguably they are not fit for purpose
This is probably a weakness of early oem nox (generation 01...02..) and I heard that in some countries (Germany...) BMW garages were exchanging them at a courtesy prices; the new oem nox generation from continental is 05 and is said to last much longer (150tkm or so). As far as I know from the other side ...VAG Group uses bosch nox sensors wich are designed to last 300tkm
Quote:
Originally Posted by aaronblack View Post
Quote:
Originally Posted by Will_460cs View Post
Quote:
Originally Posted by aaronblack View Post
Quote:
Originally Posted by Will_460cs View Post
Quote:
Originally Posted by aaronblack View Post
Quote:
Originally Posted by Will_460cs View Post
Coding out out the NOX will enable it to run stratified... This is how my car is running ;-)

325i, 3l, 3 stage manifold, remap with nox delete running stratified with a slightly broken nox sensor!

With 325i is no brainer to remap. 330I is marginal BHP improvement maybe 10-15bhp...

To really make it work and sound better with either NOXEM or Remap/NOX code out it would be best to remove the exhaust mid section with the Nox cat as both solutions are fooling the ecu in different ways..
So which would you advise/recommend Will? I've already deleted the secondary cats with the Direnza pipe as you advised!

NOxEM and Maptech NOx delete both cost about the same! Just not sure which method to go for (reliability, efficiency etc.)

Maptech charges £70 extra for a rolling map for the 330i which although don't add much I think it may improve the throttle response!
Quote:
Originally Posted by Tr1ppy View Post
Quote:
Originally Posted by Will_460cs View Post
Coding out out the NOX will enable it to run stratified... This is how my car is running ;-)

325i, 3l, 3 stage manifold, remap with nox delete running stratified with a slightly broken nox sensor!

With 325i is no brainer to remap. 330I is marginal BHP improvement maybe 10-15bhp...

To really make it work and sound better with either NOXEM or Remap/NOX code out it would be best to remove the exhaust mid section with the Nox cat as both solutions are fooling the ecu in different ways..
Interesting, thats exactly what I want to do with my 330i (not much gain I know); code out the Nox sensor and remove secondary cats.

Where did you get yours remapped if you dont mind me asking? And did you get a before/after printout?
If it was me I'd remap it, mid range response was allot better. But it's all subjective.. I'd also make sure I had some new plugs in and check my coil packs to make sure there in good shape .. ie no arcing marks discolouration etc
Cheers for that! Has your mpg improved too? As most with NOxEM claim around 40mpg easy on steady runs?

Just trying to see if the remap makes the car as efficient as NOxEM! Specially as bimmerprof claims that NOxEM improves efficiency up-to 10% over a fully working OEM NOx system!
Quote:
Originally Posted by jirka330i View Post
Quote:
Originally Posted by Will_460cs View Post
If it was me I'd remap it, mid range response was allot better. But it's all subjective.. I'd also make sure I had some new plugs in and check my coil packs to make sure there in good shape .. ie no arcing marks discolouration etc
Hallo. I have followed your discussion in this thread with high level of interest as I have become myself a victim of noxem marketing in May of this year and "enjoyed" the experience of claiming its failure (still think that it was originally very good product but when costs saving launched and production outsourced somewhere to people republic of xy it became a questionable and tricky piece of s....t). Now, I have back in the car but knowing many construction details, I do not dream about its lifetime and prepare myself for the remap/ nox system delete. As I checked in my country there are already few garages doing nox delete....but only version which allows the engine to run in homogenous mode (which is also not bad because emissions in this mode are apparently low compared to stratified charge....which was designed for fuel economy but its emissions ruin costly and fragile nox system ), but it seems that some of you have enjoyed remap which allows both homogenous and stratified modes. Can you please provide some details on the remap? Thank you
Quote:
Originally Posted by aaronblack View Post
Quote:
Originally Posted by Will_460cs View Post
Quote:
Originally Posted by aaronblack View Post
Quote:
Originally Posted by Will_460cs View Post
Coding out out the NOX will enable it to run stratified... This is how my car is running ;-)

325i, 3l, 3 stage manifold, remap with nox delete running stratified with a slightly broken nox sensor!

With 325i is no brainer to remap. 330I is marginal BHP improvement maybe 10-15bhp...

To really make it work and sound better with either NOXEM or Remap/NOX code out it would be best to remove the exhaust mid section with the Nox cat as both solutions are fooling the ecu in different ways..
So which would you advise/recommend Will? I've already deleted the secondary cats with the Direnza pipe as you advised!

NOxEM and Maptech NOx delete both cost about the same! Just not sure which method to go for (reliability, efficiency etc.)

Maptech charges £70 extra for a rolling map for the 330i which although don't add much I think it may improve the throttle response!
Quote:
Originally Posted by Tr1ppy View Post
Quote:
Originally Posted by Will_460cs View Post
Coding out out the NOX will enable it to run stratified... This is how my car is running ;-)

325i, 3l, 3 stage manifold, remap with nox delete running stratified with a slightly broken nox sensor!

With 325i is no brainer to remap. 330I is marginal BHP improvement maybe 10-15bhp...

To really make it work and sound better with either NOXEM or Remap/NOX code out it would be best to remove the exhaust mid section with the Nox cat as both solutions are fooling the ecu in different ways..
Interesting, thats exactly what I want to do with my 330i (not much gain I know); code out the Nox sensor and remove secondary cats.

Where did you get yours remapped if you dont mind me asking? And did you get a before/after printout?
If it was me I'd remap it, mid range response was allot better. But it's all subjective.. I'd also make sure I had some new plugs in and check my coil packs to make sure there in good shape .. ie no arcing marks discolouration etc
Cheers for that! Has your mpg improved too? As most with NOxEM claim around 40mpg easy on steady runs?

Just trying to see if the remap makes the car as efficient as NOxEM! Specially as bimmerprof claims that NOxEM improves efficiency up-to 10% over a fully working OEM NOx system!
Where and how are they claiming that?
So when I read through bimmerprofs website
they claim that by delaying cat regeneration they are able to improve the economy by 10% compared to a fully working nox system.

I'am skeptical myself as of course they will say and do whatever for people to buy their product!

What they are claiming is 10% improvement in isolation on the nox system in stratified mode.. however this is isn't the same as a 10% over all improvement they very carefully worded that and didn't actually state any true figures relative to economy. In my opinion by delaying the nox cat regeneration they are improving over all economy by an Incredibly small amount. The best solution has to be removing the restriction of the nox cat.
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