Delphi DCM3.4(+) — Delphi DCM diesel ECU — Renault/Dacia/Nissan/Hyundai dCi and CRDi. On this unit the following is available: Stage 1/2 for power, removal from the logic of the diesel particulate filter (DPF), the EGR system, the catalytic converter/lambda, disabling the swirl flaps, Speed Limit Off and DTC Off, rollback to the factory calibration. In the database — 35 modifications on Citroen, Peugeot, DS and 1 more brands. Read/write: Autotuner, MPPS, MagicMotorSport, KT200, FoxFlash.
The Delphi DCM3.4(+) unit is found on 35 different engines. Main brands: Citroen (18), Peugeot (14), DS (2), Fiat (1).
The Delphi DCM3.4(+) ECU supports: STAGE 1, LAMBDA OFF, EOLYS/ADDITIVE OFF, STAGE 2, CHECK STOCK OR NOT, DPF OFF, EGR OFF, DTC OFF, VMAX OFF, FLAPS OFF. Checksums are recalculated on the engineer's side in WinOLS5.
The Delphi DCM3.4(+) is supported by: KESS3, Autotuner, KTAG, CMD Flash (Bench for DCM6.2V). On production models OBD reading is usually enough; on locked variants — Bench (BDM/JTAG).
Stage 1 on the diesel Delphi DCM3.4(+) reprograms rail pressure target, SOI/EOI timing, boost target, smoke limiter and torque limiter. The torque gain is noticeable; the HP gain depends on the specific engine.
The original bin/hex/ori is accepted after reading via Autotuner, KESS3 (OBD), KTAG (bench), Trasdata. Checksums are recalculated on the engineer's side.
OBD flashing of the Delphi DCM3.4(+) — 25-30 minutes, Bench (if needed) — about an hour. The file processing itself takes 5-30 minutes after receipt.
The cost of a Delphi DCM3.4(+) file is built in the calculator: you pick the operations you need (Stage 1, emissions removals, service operations) and the price is calculated with the package discount applied.