Lotus Emira 2.0T AMG M139 (2024+)

Stage 1 & Stage 2 ECU Software + ECU Unlock Service

AMT Tuning’s ECU software for the Lotus Emira 2.0T AMG M139 turbocharged engine delivers a substantial performance increase, sharper throttle response, and optional motorsport-style exhaust character, while maintaining OEM-like drivability and safety.

This package includes the ECU unlock procedure, required so the factory-locked AMG ECU can be properly calibrated. Programming is performed on the bench – ECU must be shipped to AMT Tuning.

Vehicle Application / Specs

• Model: Lotus Emira
• Engine: 2.0T AMG – M139 turbocharged
• Output (stock): 365 hp / 317 lb-ft (approx.)
• Production Years: 2024 → Present
• ECU Type: Bench / OBD capable (after unlock)
• Programming Type: Bench (ECU sent to AMT)
• Typical AMT Programming Time (after ECU arrival): 3–4 hours (plus unlock queue time)

Power & Torque (Crank – Approximate)

Lotus Emira (268 kW / 360 hp) - 2022 - 2023

Output dependent on ECU/GCU/CPC software version — final validated figures pending

Final Stage 1 / Stage 2 figures will be published as development completes. Contact us for the latest dyno data.

Available Software Options

• Stage 1 Tune
• Stage 1 + Pops & Bangs Tune
• Stage 2 Tune
• Stage 2 + Pops & Bangs Tune
• Custom Tuning
  • Includes separate ECU logging tool and tailored calibration support

Key Features (All Calibrations)

• ECU individually reprogrammed for the AMG M139 engine
• Optimized for 91+ AKI / 95+ RON premium fuel
• Improved throttle response and sharper pedal mapping
• Refined drivability at part throttle with strong gains under load
• Optimized fuel, boost, and ignition within safe limits
• Improved fuel efficiency at light load compared to stock
• Datalog analysis available (in-house or via logging tool for custom setups)
• Factory protection strategies (knock, lambda, temperature, boost) retained and recalibrated, not disabled
• Rear O2 / DECAT strategies available for catless downpipe / header applications (off-road use only)

Stage 1 – Performance ECU Software

Stage 1 is designed for stock Emira 2.0T AMG or cars with mild bolt-ons (intake / cat-back exhaust).

• No internal engine changes required
• Calibrated for 91–93 AKI pump fuel (95–98 RON)
• Focus:
  • Strong, usable gains across the rev range
  • Crisper, more linear throttle behavior
  • OEM-like smoothness with significantly more performance

Optional: Stage 1 + Pops & Bangs for a more aggressive exhaust note (recommended only with a performance cat-back and quality exhaust components).

Stage 2 – Downpipe / Full Bolt-On (Track / Off-Road Use)

Stage 2 targets vehicles with downpipe, cat-back exhaust, and upgraded intake:

• Custom adjustment of:
  • Boost and torque targets
  • Fuel and ignition mapping
  • Torque limiters and load modeling
  • Rear O2 / DECAT strategies for catless setups
• Required (Stage 2):
  • Performance cat-back exhaust
  • Cold air intake / upgraded intake
• Recommended (Stage 2):
  • High-flow or catless downpipe
  • Upgraded intercooler and cooling for repeated track use
  • High-quality, heat-resistant exhaust components

Note: Stage 2, pops & bangs, and decat / rear O2 delete calibrations are intended for off-road / motorsport use only where permitted. The customer is responsible for compliance with local emissions and noise regulations.

Hardware Requirements & Recommendations

Stage 1

• Hardware: Completely stock vehicle acceptable
• Recommended:
  • High-flow panel filter or intake
  • Cat-back exhaust (ideal if selecting pops & bangs)

Stage 2

• Required:
  • Performance cat-back exhaust
  • Cold air intake / upgraded intake system
• Recommended:
  • High-flow or catless downpipe
  • Intercooler / cooling upgrades for heavy track use

ECU Unlock Procedure (Lotus Emira 2.0T AMG & 3.5 V6)

The Emira ECUs are locked from factory. AMT Tuning offers a bench unlock and tuning service for:

• AMG 2.0T M139
• Toyota 3.5L V6 (2GR-FE)

For AMG-equipped Emira with automatic transmission, the 8G-DCT gearbox can also be tuned via the appropriate protocol as part of a custom package.

How the Unlock Process Works

1. Prepare and Package the ECU
   • Remove the ECU from the vehicle according to proper procedures.
   • Pack it securely with ample padding; the ECU must be well protected.
   • We do not accept any ECU that has been previously opened.
2. Ship to AMT TuningShip your ECU to:AMT Tuning Ltd
   6 – 25 Edilcan Dr.
   Concord, Ontario
   L4K 3S4
   Canada
   • Use a reliable carrier (we suggest UPS or DHL)
   • Delivery and pickup must be directly to our office, not to a drop point
   • All shipping costs, including any import tax, are the sender’s responsibility
3. Unlock & Inspection
   • Our team physically opens and unlocks the ECU using professional tooling.
   • The ECU is thoroughly inspected for tampering:
     • We do not accept ECUs previously opened or modified.
     • If any non-authorized UART/CAN/FlexRay bus analyzers or devices are detected, the ECU will not be unlocked and no refund is possible (fraud detection policy).
4. Tuning & Programming
   • Once unlocked, we program the requested Stage 1, Stage 2, or custom calibration matched to your hardware.
   • Bench programming and calibration usually take 3–4 hours once the ECU is in our queue.
   • Typical unlock turnaround is about 1–2 weeks, but please allow up to 2–4 weeks depending on workload and shipping times.
5. Return Shipping & Reinstallation
   • The ECU is re-sealed, tested, and shipped back via the agreed carrier.
   • You or your installer refit the ECU, perform a systems check, and the car is ready with the new software.

Tuning Method / How It Works (Summary)

1. Place your order for the Lotus Emira 2.0T AMG Stage 1 / Stage 2 / Custom tune package.
2. Email sales@amttuning.com for ECU removal guidance and shipping instructions.
3. Send the ECU to AMT Tuning for unlock and calibration.
4. We perform the unlock, apply the selected calibration, and carry out bench checks.
5. ECU is returned, refitted, and ready to run with AMT software.

Ordering Information

When ordering, please include:

• VIN and model year
• Engine: 2.0T AMG M139
• Current hardware:
  • Intake
  • Downpipe (OEM / high-flow / catless)
  • Exhaust / cat-back
  • Catalyst configuration (OEM, sports cat, or catless)
• Desired software:
  • Stage 1 / Stage 1 + P&B
  • Stage 2 / Stage 2 + P&B
  • Custom tuning (for specific track builds, gearbox tuning, or advanced hardware)

If you are unsure which stage or configuration is best for your usage (daily, spirited road, or track), contact us and we will recommend the most suitable calibration and hardware combination for your Emira 2.0T AMG.