What the Stage 2 Package Includes
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A hardware upgrade (at minimum the downpipes with integrated heat-shield) plus
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A custom ECU tune / remap tailored to the car after installation of the hardware.
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Specifically, for a 570GT example they list: stock ~560 HP → tuned ~732 HP / 930 Nm torque.
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They emphasise: “A stage 2 remap involves recalibrating the ECU software, combined with necessary hardware upgrades …”
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They promise benefits such as:
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Up to +40% power & torque (depending on hardware)
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Enhanced throttle response, improved sound, deeper exhaust note, calibrated crackles/flames
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The downpipes they install are described as “aircraft-grade SS304 stainless steel, TIG welded … integrated thermal heatshield …”
What It Means Practically for McLaren 600LT / 570S / 570GT / 540C
If you apply this package to the models you listed, you can expect (subject to existing condition, supporting hardware and tuning scope) something along the lines of:
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Removal or upgrade of factory downpipes (less restriction → better turbo response, lower back-pressure)
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ECU/engine remap that raises boost (if turbocharged car), advances ignition/trim, improves air/fuel etc
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Sound upgrades: deeper tone, crackles / flames (if exhaust/hardware supports)
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Improved throttle response, stronger mid-range & top-end pull
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Possibly changes in cooling, heat management (thanks to the heatshielded downpipes)
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Note: The magnitude of power gain depends on the car’s stock condition, previous mods, fuel quality, cooling, and how aggressive the tune is. For the 570GT they achieved ~+172 HP / ~+370 Nm. (560 → 732 HP, torque 930 Nm)
Key Considerations & Notes
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Because it’s a Stage 2 tune that requires hardware upgrades, you should check which specific hardware is required for your exact model and condition. For example, whether you’ll need upgraded intercoolers, exhausts, downpipes, or other supporting mods.
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The warranty on your vehicle may be impacted. Aftermarket tuning and hardware often void manufacturer warranty for engine/drive-train.
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Local emissions laws / road legality: Some of the extra features (flames, crackles, loud exhaust, removed emissions gear) may not be legal in all jurisdictions (including Morocco) or may affect inspection/registration.
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Reliability and heat load: When you raise power significantly, you increase stress on engine, transmission, cooling system, etc. Make sure your cooling/fluids/supporting systems are up to the job.
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Dynamic tuning: The package states “live on our dyno for maximum performance and reliability” for each car. That means ideally the car is physically present for dyno tuning—not just a “map drop”.
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Crank and turbo health: On turbocharged McLaren models, the existing turbos, bearings, heat shielding, etc must be in good condition to safely take the extra power.
Specific for Your Models
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For the McLaren 600LT and 570S/570GT/540C (which share the M838T engine in various states) the Stage 2 hardware + tune should deliver substantial uplift over stock.
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Example from Narkos: 570GT 732 HP / 930 Nm is a real-world reference. So if your car is a 540C, expect somewhat less (because stock is lower) unless further supporting mods are done.
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Make sure the tune is tailored to your exact variant (for example 540C has different power basis than 570GT/570S).
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Also, check if you’ll need to upgrade the exhaust (beyond downpipes) or intercooler—if not done, the full possible gain may be limited.
If you like, I can look up exact dyno graphs, breakdown of the full hardware list, pricing for Morocco/Europe, and legal implications for your location. Would that be helpful?
