[aaronblack]

Hi all,

Long story short, I've been following Will's post and up until now have managed to fix almost everything on my N53 330i (big thanks to Will) yet the last thing standing is to sort out the NOx issue.

Now as it seems bimmerprofs are not too keen on NOx deletes, with claims that deleting/mapping out the NOx could cause issues down the line, not sure how true this is, whether they’re just trying to sell their product etc. but here is what they say:

"In no way, the N43/N53 series engine can work without NOx system. “Disconnection” of the NOx system in any way is the shortest way to huge problems in the nearest or further future."

Now from the 2 options available NOxEM or NOx delete, does anyone have any preference/tips/guide etc. which to go for? Deleting is cheaper option, and FYI I’ve already gotten rid of the secondary Cats!
- Does NOxEM really provide better efficiency (up to 25%) over deleting?
- Does deleting cause any issues (providing it’s done by the right person)?
- Would the car still run Stratified mode with deleting? I know it does with NOxEM