My car has done 142,000 miles and the iDrive was forecasting a remaining DPF life of around 13,000 miles.
I was quite pleased therefore when I managed to get DIS up and running and ran a test on the DPF which checked and displayed the back-pressure at varying engine speeds.
These are the results I got. I have also included the maximum back-pressure for each speed at which the test was carried out (this was also displayed by DIS):
Engine Speed (RPM) === Measured Pressure === Maximum Allowed Pressure
Idling === 6.9 === 65
2,000 === 22.9 === 150
Cutoff (Approx 4,400) === 78.9 === 250
On that basis I reset the iDrive service counter for the DPF and it has remained at 120,000 miles until replacement for the past 4 weeks.
I will spend the money I had planned for DPF delete on something else.
e90 330d, Montego Blue, Beige Dakota Leather, Auto, Nav Pro, Bluetooth Prep, BMW Connected Drive, Voice Control, Sports Seats, Split Rear Seat, 18" Ellipsoid Wheels Style 162 Burr Walnut Trim