McLaren 570S Spider Engine Control Module kit+wrench
Engine Control Module (ECM) with a mechanical wrench, there are two distinct ways owners typically upgrade or service this part.
The ECM (also known as the ECU) on the 570S is located behind the rear right inner fender liner. To access it, you will need standard mechanical tools, specifically a 10mm socket or wrench and a T-25 Torx bit for the fender liner screws.
1. Performance Tuning Kits (The “Kit” Approach)
If you are looking for an “ECM Kit” to increase power, these usually come as Plug-and-Play modules or OBD-II Flashing Suites. They don’t include wrenches, but they do include the necessary electronics and cables.
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M-Engineering M-Tuner Suite: A popular “at-home” kit. It includes an OBD-II to USB cable, a USB stick with software, and a custom calibration. It allows you to flash the ECU without removing it from the car.
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RaceChip GTS Black Kit: This is a physical “tuning box” kit. It includes the GTS Black module, a vehicle-specific wiring harness, and cable ties. It intercepts signals before they reach the ECM to increase boost and timing.
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Syvecs S7 Plus Plug-In ECU: A complete replacement for the factory ECM. This kit includes the standalone ECU and a bespoke wiring loom adapter, designed for high-horsepower builds or motorsport use.
2. Diagnostic & Service Kits
If you are replacing a faulty ECM or need to reset codes after a repair, a mechanical wrench won’t be enough. You need a digital “wrench”—a specialized diagnostic tool.
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Autel MaxiSys MS908S Pro II: One of the few aftermarket tablets that can actually communicate with the McLaren Powertrain Control Module. It is essential for “marrying” a new ECU to the car’s VIN or resetting the oil service light.
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Veepeak Bluetooth OBDCheck BLE: A budget-friendly tool to keep in your glovebox. While it can’t program a new ECM, it can read and clear engine fault codes (CEL) via your smartphone.
Comparison of ECM Solutions
| Feature | OBD Flashing Kit | Tuning Box Kit | Standalone ECU Kit |
| Best For | Daily Power Gains | Warranty Protection | Competition/Track |
| Hardware | OBD Cable + Software | Piggyback Module | Full ECU Replacement |
| Installation | Digital (15 mins) | Physical (45 mins) | Physical (2+ hours) |
| Reversible? | Yes, flash back to stock | Yes, just unplug | Yes, but intensive |
Recommended Next Step
If you are replacing the physical ECM unit due to a failure, you’ll need a 10mm wrench for the battery terminals and the ECM bracket. If you are just looking for more power, the M-Engineering M-Tuner is the industry standard for the 570S because it requires no physical tools—just a laptop and the provided cable.
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