DCM3.4 ECU: Professional Chip Tuning File Service for PSA and Renault-Nissan 1.5L-2.0L Diesel Engines
Delphi's DCM3.4 ECU is an engine control unit used in French automotive groups (PSA - Peugeot/Citroën and Renault-Nissan-Dacia) with 1.5L dCi and 2.0L HDi diesel engines. Used in vehicles produced between 2000-2011, this ECU manages the power of efficient and economical diesel engines.
As OnlineChipTuning, we offer custom file services prepared from scratch by our engineers for your PSA and Renault group vehicles. By analyzing the complex Common Rail injection, turbo boost, and torque control maps of the DCM3.4 ECU, we ensure you get maximum power and efficiency within the engine's safe limits.
This page details the technical capacity of the DCM3.4 ECU, supported models, and the Stage 1 and Stage 2 advantages you'll gain by submitting files through OnlineChipTuning.com.
DCM3.4 ECU Technical Specifications and Potential
The DCM3.4 is an engine control unit produced by Delphi between 2000-2011, used especially in PSA (Peugeot-Citroën) and Renault-Nissan-Dacia groups' diesel engines. This ECU manages 1.5L dCi (K9K) and 2.0L HDi (DW10B, DW10TED4) engines producing power in the 65-140 PS range. It is used in a wide model range including Peugeot 308, 407, 508, 607, 807, Citroën C4, C5, Renault Clio, Megane, Kangoo, Dacia Duster, Sandero, and Nissan Note. The original file you upload to our platform is processed with professional software like WinOLS and ECM Titanium to reveal this ECU's hidden potential.
Main optimizations we offer on this ECU:
- 1.5L dCi and 2.0L HDi engine optimization
- Optimization of Common Rail injection pressure and timing
- Safe increase of turbo boost pressure
- Increase of rail pressure within engine protection limits
- Improvement of throttle response
- PSA and Renault platform compatible settings
- Economy and performance balance
- French car character protected performance
Which Models Feature DCM3.4?
This ECU is common in PSA and Renault group vehicles produced especially between 2000-2011:
Supported Vehicles
- Citroën C4/C4 Coupe 2.0L HDi 136PS (2004+)
- Citroën C4 Picasso/Grand Picasso 2.0L HDi 136PS (2006+)
- Citroën C5 2.0L HDi 136PS (2008+)
- Peugeot 308/407/508/607/807 2.0L HDi 136-140PS (2000-2010)
- Renault Clio/Megane 1.5L dCi 75-89PS (2006+)
- Renault Kangoo 1.5L dCi 89PS (2005+)
- Renault Modus/Grand Modus 1.5L dCi 90PS (2008+)
- Dacia Duster/Sandero 1.5L dCi 90PS (2007-2011)
- Nissan Note/NV200 1.5L dCi 65PS (2004+)
In these vehicles, the DCM3.4 can offer remarkable power increases with software, especially when combined with DPF and EGR system removal. 1.5L dCi engines +20/30 HP, 2.0L HDi engines +30/45 HP increases are possible.
Why Customized Chip Tuning?
Factory software is left conservative considering emission standards and economical usage priority. OnlineChipTuning shapes the file you read from your vehicle according to your requests.
Advantages of our customized service:
- Provides performance increase in Peugeot 308/407 while maintaining sedan comfort.
- Strengthens compact hatchback dynamics in Citroën C4.
- Optimizes economy and performance balance in Renault Megane/Clio.
- Improves SUV off-road performance in Dacia Duster.
- Unlocks high torque potential of 2.0L HDi engines.
- Preserves economy of 1.5L dCi engines.
- Reduces fuel consumption through more efficient combustion.
- Preserves French car comfort character.
DCM3.4 Stage 1 and Stage 2 Differences
Power achieved only through software without any part replacement on the vehicle. DPF and EGR remain in original condition. Safe performance increase is targeted without shortening engine life.
- Safe & Stable Power/Torque Increase (+20-30 HP)
- Turbo System Optimization
- Sharper Throttle Response
- PSA/Renault Quality Protected
Specific to vehicles with modifications such as DPF Delete, EGR Off, and/or performance exhaust system. Maximum performance is unlocked by freeing the engine from all emission restrictions.
- DPF / FAP Completely Off
- EGR Valve Deleted
- Maximum Torque and Horsepower (+30-50 HP)
- Economical/Efficient High Performance
Special Solutions Offered with OnlineChipTuning
Since DCM3.4 ECU covers PSA and Renault group vehicles, we offer all special solutions:
- DPF / FAP OFF: Complete shutdown of particulate filter system.
- EGR OFF: Disabling the exhaust gas recirculation valve.
- VMAX OFF: Removal of factory speed limiter.
- Lambda / O2 Delete: Turning off the check engine light.
- MAF Sensor Delete: Cancellation of mass air flow sensor errors.
- HDi High Torque: 2.0L HDi high torque settings.
- dCi Economy: 1.5L dCi economy optimization.
- PSA Platform: Peugeot/Citroën platform compatible settings.
- Renault Platform: Renault/Dacia/Nissan platform settings.
- French Comfort: French comfort character balance.
Custom File Preparation Process for Your Vehicle
The process is shaped according to your PSA or Renault platform needs. Our engineers identify the engine version, consider the vehicle type (hatchback, sedan, MPV, SUV), and send the file back to you.
Why Us?
- 24/7 File Service: Fast turnaround time (average 2-4 hours).
- PSA Expertise: Peugeot/Citroën group experience.
- Renault-Nissan Knowledge: Renault/Dacia/Nissan platform knowledge.
- Delphi DCM Experience: Delphi DCM3.4 ECU specialization.
- HDi/dCi Specialist: HDi and dCi engine family expertise.
- French Car Focus: French car special experience.
- Economy Priority: Economical vehicles efficiency balance.
- Multi-Platform: PSA and Renault platform knowledge.
Your Professional Tuning Solution Partner
You're in the right place to reveal the true potential of your Peugeot, Citroën, Renault, Dacia, or Nissan's diesel engine. With our team specialized in the DCM3.4 ECU, we offer the most suitable, customized software solution for your vehicle.
