3.0 Ingenium I6 Diesel D300 Upgrade to D350 Factory Versions for Range Rover

Product Technical Overview

This exclusive factory‑authorised power‑calibration service applies to 2020‑Model‑Year‑onwards full‑size Range Rover and Range Rover Sport equipped with the 3.0 Ingenium AJ20D6 inline‑six 48‑volt mild‑hybrid diesel powertrain. D300 and D350 variants share identical mechanical hardware including twin variable‑geometry turbochargers, 2500‑bar high‑pressure fuel injection hardware, intercooler, DPF exhaust after‑treatment assemblies, cooling circuits and complete drivetrain components. The performance gap originates solely from locked‑down factory ECU mapping. Our genuine JLR‑standard programming unlocks the higher‑output calibration without physical part swaps, engine disassembly or risky aftermarket remapping.

Stock D300 delivers 300 hp / 650 Nm with 0‑100 km/h acceleration of 7.4 seconds. After D350‑map activation the powertrain delivers factory‑rated 350 hp / 700 Nm, cutting 0‑100 km/h acceleration to 7.1 seconds. Throttle response, low‑end torque and towing capacity see measurable improvements, while OEM emission limits, DPF regeneration sequences, engine‑protection thresholds and manufacturer‑warranty compatibility remain fully intact. Prior to any ECU flash our technicians complete a full‑scope hardware audit covering engine assemblies, boost hardware, fuel injectors, cooling system, intake, exhaust after‑treatment, gearbox, propshafts, transfer case, differentials and brake hardware. Only units passing full‑system‑compatibility assessment proceed to D350 calibration, eliminating risks of mechanical mismatch and post‑upgrade DTC fault codes.

Service Operation & Remote Activation Procedure

This is a software‑only OEM upgrade. All on‑site tasks including adapter fitting and ignition‑state setup are to be completed by the end‑user, who accepts full operational responsibility during remote programming. Two activation pathways are supported: offline local activation using JET‑Pro / JET‑Master tool plus genuine Enet‑DOIP adapter; secure TeamViewer‑based remote activation managed by our engineering department.

1. Submit vehicle VIN for factory build‑sheet cross‑reference and hardware‑compatibility validation;
2. Finalise online checkout via PayPal to secure the VIN‑locked exclusive D350 calibration file;
3. Set‑up TeamViewer on a Windows‑based laptop and share secure remote ID plus password with our certified JLR technicians;
4. Turn vehicle ignition to ON (engine not running), connect genuine JLR Enet adapter between laptop and vehicle OBD2‑DOIP port;
5. Our engineers perform OEM‑standard ECU flashing, module network synchronisation and DTC clearing, followed by automated full‑system self‑test.

After calibration validation, the Range Rover operates with complete factory D350 power output retaining all original vehicle functions.

Core Service Advantages

• Genuine factory‑origin D350 ECU mapping; no third‑party modified remaps
• No mechanical disassembly required; fully remote OBD‑based programming supported
• Comprehensive multi‑component pre‑upgrade hardware inspection to filter incompatible vehicles
• VIN‑bound dedicated calibration file preventing generic flash‑file compatibility conflicts
• DPF, EGR and full emission‑control systems retain factory‑stock operational logic
• No permanent ECU‑modification traces to jeopardise residual manufacturer warranty
• Post‑programming full‑system self‑check to remove temporary diagnostic trouble codes

Compatibility & Official Technical Support

This service is valid only for 2020MY‑onwards Range Rover / Range Rover Sport fitted with the 3.0 Ingenium I6 48V‑MHEV D300 diesel powertrain. It does not apply to legacy TDV6 / SDV6 platforms, petrol‑engine or plug‑in‑hybrid vehicles. For factory power calibrations, hidden‑feature activations and OEM‑module supply please visit https://jlr-activations.com/. Long‑term wholesale‑cooperation programmes are available for professional JLR repair workshops and independent garages.