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D300 to D350
$594.00
0-60 = from 6.5s to 5.8sPower = from
300ps to 350psTorque = from 650nm to 700nmTop Speed = from 135mph to
145mphPlease note – this is not a “re-map”. This is a genuine power
upgrade. We use the same process that is used on the production line to
ensure that the correct calibrations are uploaded to the
vehicle.Manufacturers specifications are maintained.
D300 to D350 | JLR 3.0L Ingenium MHEV Diesel OEM Performance Unlock
JLR installs identical mechanical hardware for D300 and D350 trims. All turbo, cooling and fuel system parts share matching OEM specifications. Factory PCM and CCF software limits cap D300 power output by design.
Our dealer-approved DoIP programming activates the dormant D350 calibration profile. This process uses zero hardware changes or aftermarket ECU flashes. It works as a technical reference and direct purchase-ready service.
Core JLR Technical Specifications</h2>>
- Stock D300 output: 300 PS / 650 Nm peak torque
- Unlocked D350 output: 350 PS / 700 Nm peak torque
- Measurable gain: +50 PS power and +50 Nm torque increase
- Compatible powertrain: 3.0L Ingenium inline-six MHEV Diesel (MY21–MY25)
- Modified modules: PCM, vehicle CCF, IPC cluster and central gateway
- Full retention of factory DPF regeneration and emission controls
- Preserves SOTA updates, dealer diagnostics and fault code functionality
- Fully reversible with secure pre-programming CCF file backup
JLR Diesel Powertrain Engineering Logic</h2>>
JLR manufactures D300 and D350 engines with identical core hardware. Turbocharger assemblies, injectors and mild-hybrid components carry identical part numbers. Factory software limits boost pressure and fuel delivery on base D300 models.
These calibrated restrictions create trim-level differentiation, not mechanical limitations. Our CCF and PCM adjustment enables the hidden D350 OEM map. It optimises turbo spool response and fuel timing for higher output.
All factory safety systems remain active after programming. Thermal protection, load limiting and emission compliance rules stay unchanged.
Real-World Driving & Towing Benefits</h2>>
The D350 calibration improves low-end torque for stronger initial pull. Mid-range acceleration feels more responsive for overtaking and highway driving. Towing capability improves noticeably for heavy loads and caravan use.
The MHEV e-boost system syncs perfectly with updated power parameters. Standard fuel economy and engine refinement remain consistent with stock levels. No aftermarket tuning compromises DPF health or long-term reliability.
The instrument cluster updates to display accurate D350 power and torque metrics.
OEM PCM & CCF Programming Procedure</h2>>
Our certified technicians perform a full pre-programming network scan. We log existing DTCs and back up the original vehicle CCF configuration. A compliant DoIP VCI tool connects for secure Pathfinder gateway access.
We enable factory D350 powertrain flags and flash official PCM calibration data. The team syncs updated parameters across all connected ECU modules. We clear residual fault codes and validate full network stability.
A short road test confirms smooth power delivery and fault-free operation.
All programming is reversible, dealer-safe and fully emissions compliant. Place your order today for professional JLR-grade diesel calibration.
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