Volkswagen Polo 1.2 TDI 75 hp 6R (2009)
Delphi DCM3.7. SH72543 -
Manufacturer: VOLKSWAGEN
Engine ...
Looking at your file, I can confirm the identifiers from the binary:
ECU: Delphi DCM3.7 (SH72543)
SW: 03P906021A
HW: 03P 907 425 A
Engine: CFWA 1.2 TDI
Calibration: DH1-00S19.08.11UPS60131
Build: U00A1100
DEV1 (May 26 2010) / U10B5222N
DELIV3 (Jul 18 2011)
The file is 2 MB, read via OBD — this is a
partial read (calibration area only, no full flash). That's normal for OBD reads on DCM3.7.
Regarding your original question — DPF / EGR status:
To properly verify whether DPF and EGR are ON or OFF in this file, you need a map definition set (damos/a2l) or a tuning tool that supports DCM3.7 with this SW version. The key things to look for:
DPF:
- DPF regeneration enable/disable flags (often a single byte or bit flag)
- DPF differential pressure sensor plausibility thresholds
- Soot mass model parameters and regeneration trigger thresholds
- DPF-related DTC monitoring enable masks
EGR:
- EGR valve target position maps (if all values are zeroed → OFF)
- EGR enable/disable flag
- EGR-related DTC monitoring enable masks
Without comparing your file against a known
original (ORI) for this exact SW version (03P906021A / 9979), it's impossible to say with certainty from the hex preview alone whether modifications have been made. The file name contains "OBD_NR" which might suggest it's a non-modified read, but that doesn't confirm anything.
What you should do:
- Open the file in a tool that supports Delphi DCM3.7 map identification (e.g., WinOLS with the appropriate damos/mappack, or a dedicated solution like Swiftec/Alientech ECM Titanium with DCM3.7 driver).
- Compare against a verified ORI for 03P906021A. If you don't have one, that's what you need first.
- Check the DPF and EGR maps/flags specifically — if the maps are zeroed or flags are flipped compared to ORI, they're OFF.
Regarding your request for the ORI file — I don't distribute files, but you can search ORI databases (e.g., ECU.file, OLS projects) using the SW number
03P906021A and calibration ID
DH1-00S19.08.11UPS60131 to find a matching original.
riginal_Stage_1_DPF_EGR_Swirl_Flaps.zip