McLaren Senna 4.0 V8 800bhp tuning file
All years · Petrol
Stage 1 remap: +50 bhp & +100 Nm
ECU
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Available solutions
Our Stage 1 tuning file takes the McLaren Senna 4.0 V8 800bhp from 800 bhp and 800 Nm to 850 bhp and 900 Nm – that's +50 bhp (6%) and +100 Nm more. The remap file is written by a calibrator for your exact software and returned through the portal, normally within 5–15 minutes. Solutions such as DTC Removal can go into the same file.
Who is this remap for?
Naturally aspirated petrol engines gain less than turbo engines, but a remap still improves throttle response and smooths out flat spots in the power delivery. 800 → 850 bhp equals roughly 597 → 634 kW.
Figures are guide values from our rolling road and comparable vehicles. Results depend on the vehicle's condition, hardware and fuel quality. Remapping in the UK: let your insurer know about the modification. DPF, EGR and AdBlue solutions are supplied for off-road and motorsport use only and are not legal for use on UK roads.
Engine specification
| Fuel type | Petrol |
| Engine size | 3999 CC |
| Compression ratio | 8.7 : 1 |
| Bore × stroke | 93.0 X 73.5 mm |
| Engine code | M840TR |
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Open a free account on the file service portal, claim 5 test credits and upload your first read – most files are back with you in under 15 minutes.