Typical result
The 520d typically gains approximately 35-50bhp and stronger torque across the usable rev range.
Available engines: 520d · 530d · 520i · 530i
S7 Remaps provides professional mobile ECU remapping for the BMW 5 Series. A remap suits the 5 Series' long-distance character, improving effortless performance and towing ability. We tailor every map to the engine, ECU and your driving goals rather than applying a one-size-fits-all file.
BMW 5 Series Stage 1 Remap
A stage 1 remap is the most popular upgrade for the BMW 5 Series. It optimises fuelling, ignition or boost control within sensible factory hardware limits, improving throttle response, mid-range torque and everyday drivability. The 520d typically gains approximately 35-50bhp and stronger torque across the usable rev range.
What We Check Before Remapping
We check the vehicle's condition, warning lights, service history and ECU compatibility before writing any software. A remap should enhance a healthy engine, not mask a mechanical issue. We explain the available options and costs before starting.
Mobile BMW 5 Series Tuning
We come to your home or workplace across Preston and Lancashire. Most remaps take around 1-2 hours, and all work includes a 12-month software warranty plus direct aftercare support.
Frequently Asked Questions
The 520d typically gains approximately 35-50bhp and stronger torque across the usable rev range. Exact results depend on engine condition, fuel quality, ECU version and the chosen map. We give realistic expectations before booking.
REAL S7 REMAPS RESULTS
Results from genuine customer vehicles
Genuine S7 customer results will be added here as dyno sheets, vehicle details and customer-approved photos become available. We do not publish made-up figures.