Typical result
The 320d commonly sees around 35-50bhp, while larger turbo petrol and diesel engines can gain more.
Available engines: 318d · 320d · 330d · 320i · 330i
S7 Remaps provides professional mobile ECU remapping for the BMW 3 Series. A BMW 3 Series remap can transform motorway overtaking and make the car feel more responsive without hardware changes. We tailor every map to the engine, ECU and your driving goals rather than applying a one-size-fits-all file.
BMW 3 Series Stage 1 Remap
A stage 1 remap is the most popular upgrade for the BMW 3 Series. It optimises fuelling, ignition or boost control within sensible factory hardware limits, improving throttle response, mid-range torque and everyday drivability. The 320d commonly sees around 35-50bhp, while larger turbo petrol and diesel engines can gain more.
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 3 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 320d commonly sees around 35-50bhp, while larger turbo petrol and diesel engines can gain more. 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 We do not publish made-up figures.