UPGRADE LOWER POWER 2.2 TD4 TO HIGH POWER SD4 VERSION

Genuine factory SD4 calibration. The output your TD4 already carries. No hardware changes.

JLR builds the 2.2-litre Duratorq TD4 and SD4 on one shared engine architecture. For 2011MY-onward vehicles, the hardware between the 150PS TD4 and 190PS SD4 is identical: same turbocharger, same injectors, same high-pressure fuel pump, same pistons, same cylinder head. JLR creates the power gap exclusively through the engine control module calibration table. The TD4 runs a software power limiter that caps the engine well below its designed ceiling. This upgrade replaces that limited calibration with the genuine factory SD4 map. You unlock 190PS and 420Nm through official JLR software, and you leave every mechanical component untouched.

Performance Transformation: TD4 vs. SD4

These figures reflect JLR’s published factory specifications across Freelander 2, Range Rover Evoque and Discovery Sport applications. The torque figure deserves attention: both variants share the same 420Nm ceiling in most markets, so the upgrade primarily releases top-end power and sustains stronger delivery toward the redline. The TD4 calibration deliberately restricts peak power to establish a trim hierarchy, and it leaves the engine underutilised relative to its designed capability. The SD4 map restores the full factory output the hardware was engineered to produce.

Hardware Commonality and Calibration Logic

The 2011MY-onward 2.2 Duratorq uses a water-cooled variable-geometry turbocharger, third-generation common-rail direct injection and a robust cast-iron block. JLR fits this identical hardware package to both the TD4 and SD4. Owners who compared part numbers in the official Land Rover Microcat catalogue confirm that every component carries the same part number across both variants. The 150PS designation exists only in marketing and calibration tables, not in the parts catalogue. Independent technicians who ran IDS/VCM diagnostic comparisons on MY11 vehicles found the ECUs identical apart from the calibration table itself[reference:0][reference:1]. This upgrade therefore restores the engine to its native factory specification rather than pushing it beyond design limits. Every OEM thermal protection strategy, exhaust gas temperature ceiling, DPF regeneration cycle and diagnostic monitor stays fully active.

Technical Process: EDC17CP42 Calibration and Diagnostic Integrity

We install the factory SD4 calibration through the vehicle’s diagnostic architecture. The 2011MY-onward 2.2 diesel uses the Bosch EDC17CP42 engine control module with a protected TriCore processor[reference:2][reference:3]. Our technicians establish a secure connection through the vehicle’s ENET diagnostic port using JLR-compatible diagnostic infrastructure. We read the original calibration file, verify the vehicle’s VIN against the JLR database, and write the genuine factory SD4 calibration table. The process preserves the factory immobiliser, diagnostic communication and every emission-related monitoring function. We complete a post-write diagnostic scan and a controlled road test before handover. The calibration stays fully reversible because we retain the original factory file and restore it at any time. This is a factory-version calibration upgrade, not a custom remap, so OEM reliability characteristics remain intact[reference:4].

Vehicle Compatibility and Requirements

This upgrade supports JLR vehicles fitted with the 2011MY-onward 2.2-litre Duratorq diesel in TD4 specification with factory automatic transmission. Confirmed compatible applications include Freelander 2 (2011–2014), Range Rover Evoque (2011–2015) and Discovery Sport (2014–2015). The Aisin AWF21 six-speed automatic handles up to 450Nm, so it comfortably accommodates the factory SD4 output[reference:5]. The SD4 specification pairs exclusively with the automatic gearbox in most markets, so we verify transmission compatibility during the VIN check. Manual-transmission TD4 variants require separate assessment because the gearbox torque limit sits below the SD4 ceiling. VIN verification is mandatory before purchase. Submit your VIN during checkout, and our technical team confirms the correct factory SD4 target calibration for your specific vehicle.

Warranty, Compliance and Documentation

This upgrade uses genuine JLR factory calibration data and JLR-compatible diagnostic protocols. The procedure preserves the vehicle’s OEM software architecture, leaves no physical trace and remains fully reversible through the original file backup. The calibration retains full dealer diagnostic compatibility and supports standard diagnostic equipment. We recommend reviewing your specific warranty terms and discussing the calibration with your authorised JLR dealer before installation. We provide full documentation of the calibration process for your records.

Ordering and Installation

1. Submit your VIN — our team verifies compatibility, confirms the automatic transmission, and identifies the correct factory SD4 target calibration.
2. Receive your calibration package — we prepare the JLR factory SD4 software and provide installation guidance.
3. Remote or in-person installation — the calibration uploads through the ENET diagnostic port using JLR-compatible standards, typically within a single service session.
4. Post-upgrade verification — we confirm successful calibration, complete a diagnostic scan and provide documentation.

Restore the SD4 output your TD4 already carries. The hardware is identical. The factory calibration is ready. This upgrade delivers the specification JLR engineered from the start.