Locked out at 11pm near Heathrow. They were with me in 25 minutes, no damage, cheaper than the dealer quoted. Genuine lifesavers.
James M.
Hounslow · Emergency Unlock
Stage 1 Remap · Mobile ECU Tuning · Dyno-Proven ///
Stage 1 Remap +30% BHP · From £259 · Mobile UK
Stage 1 Remap — the safe, dyno-proven ECU tune for a stock car. Typical Stage 1 remap gains: +20–30% BHP, +25–35% torque, sharper throttle, better MPG. Mobile Stage 1 remap on your driveway across West London, Slough, Heathrow, Reading, Watford, Oxford and the Home Counties. Fixed price from £259, 12-month warranty, fully reversible.
30-min response
West London
Fully insured
Public & PI
Non-destructive
Industry standard
Dealer-level kit
AutoTuner · Autel
Fixed quotes
Before we attend
Instant Tailored Quote
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Custom-written maps · Lifetime software warranty · Dyno-verified figures
No spam · No obligation · Fixed pricing confirmed before we attend
Professional. Mobile. Trusted.
Stage 1 Remap is the industry-standard first step in ECU tuning — a full software rewrite of a completely stock vehicle that unlocks the headroom manufacturers leave in every calibration for regional fuel quality, hot climates and long-term durability. A properly-written Stage 1 remap delivers +20–30% BHP, +25–35% torque, cleaner throttle response and, driven sensibly, +2–5 MPG on diesel — all inside factory injector, turbo and gearbox limits, all dyno-proven, all reversible. StageMyCar UK writes and installs Stage 1 remap files on your driveway across West London, Slough, Heathrow, Reading, Watford, Oxford and the M25/M4/M40 corridor using dealer-grade AutoTuner and Alientech K-TAG hardware — no need to drop the car at a workshop. Every Stage 1 remap is engine-specific (not a downloaded generic file), datalogged on the road afterwards, and backed by a 12-month software warranty.
- Typical Stage 1 remap gains: +20–30% BHP, +25–35% torque
- Dyno-proven, engine & gearbox safe — inside factory injector/turbo/DSG limits
- Sharper throttle response, smoother torque delivery
- +2–5 MPG on diesel when driven sensibly (eco-biased Stage 1 file on request)
- All petrol & diesel makes — BMW, Audi, VW, Mercedes, Ford, Range Rover, Skoda, SEAT
- Mobile Stage 1 remap UK — we come to you, 60–120 minutes on site
- Fixed price from £259, 12-month software warranty, fully reversible
Prices shown are guide prices only and start from the amount displayed. Final pricing depends on vehicle make, model, ECU type, modifications present, software version and complexity of the work.
- Mobile Service Available
- Professional ECU Tools
- Verified File Suppliers
- Before & After Performance Gains
- Call or WhatsApp for an Exact Quote
Payment Assist · Official Partner
Spread the Cost with Payment Assist
On selected services over £250, you can split the total into 3 or 4 monthly payments with 0% APR available. A small deposit is paid on the day, then the remaining balance is collected in equal monthly instalments. No long forms, no waiting — applied on site before work begins.
- 0% APR available on selected services
- 3 or 4 equal monthly payments
- Deposit paid on the day
- Soft credit check — no impact at quote stage
- Decision in minutes, on site
- Available on jobs over £250
Finance subject to status and approval and provided by Payment Assist Ltd, authorised and regulated by the Financial Conduct Authority. 0% APR available on selected services. Terms, eligibility and final monthly figure confirmed at application. StageMyCar UK is an introducer appointed representative — we do not charge a fee for this service.
Example · Illustrative
£480 ECU Remap · 0% APR
3 payments
£120/mo
£120 deposit
4 payments
£96/mo
£96 deposit
Authorised & regulated by the FCA
Decision in minutes — apply on site
Subject to status & approval
Indicative example only. Final terms confirmed at application.
Frequently Asked Questions
What is a Stage 1 remap?+
A Stage 1 remap is a software rewrite of your car's ECU designed for a completely stock vehicle — no hardware changes, no exhaust, no intake, no downpipe. We optimise fuelling, ignition timing, boost pressure and torque limiters within the safe headroom the manufacturer left in the map, typically unlocking +20–30% BHP and +25–35% torque on turbo petrol and modern diesels. Fully reversible, dyno-proven, and readable to the factory calibration ID.
How much does a Stage 1 remap cost in the UK?+
Stage 1 remap cost starts at £259 all-in for OBD-flashable ECUs (most VAG, BMW, Ford, Vauxhall). Bench/boot-mode ECUs (Mercedes MED17.7, Range Rover, newer M240/M340) are £329–£399. Fixed quote by reg-plate before any work — no dyno-time upsell, no per-hour creep.
Is a Stage 1 remap safe for the engine and gearbox?+
Yes when it's written correctly. Every file we load is dyno-proven, capped inside factory injector duty, turbo shaft-speed and DSG/ZF torque limits, and datalogged on the road afterwards. Manufacturers leave headroom for regional fuel quality, altitude and hot-climate durability — Stage 1 taps that headroom without adding hardware stress.
How much power will I actually gain?+
Typical Stage 1 gains: VW/Audi 2.0 TDI 150→190bhp, BMW 320d F30 184→220bhp, Ford Fiesta ST 200→240bhp, Golf R MK7 300→360bhp, BMW M140i 340→400bhp, Range Rover 3.0 SDV6 249→290bhp. We publish a before/after dyno for your specific engine, gearbox and fuel grade before we invoice.
Will a Stage 1 remap affect fuel economy?+
Sensibly driven, most customers see +2–5 mpg on diesels and roughly flat on petrol — the engine is more efficient at part-throttle. Drive it like you stole it and MPG drops (that's true of any tune). We offer an economy-biased file on request.
Is Stage 1 remap reversible? Will it affect warranty or MOT?+
Fully reversible in 30–45 minutes — we keep your original file on record for 12 months and can restore it free of charge before any dealer visit or MOT. Remapping doesn't void warranty on unrelated components (brakes, electrics, trim) but a manufacturer can decline drivetrain claims if a tune is detected; reverting first avoids that.
How long does a Stage 1 remap take?+
60–120 minutes on site for OBD-flashable cars. Bench/boot-mode ECUs (older Mercedes, Range Rover, some Porsche) 2–4 hours. We come to you — West London, Slough, Heathrow, Reading, Watford, Oxford, the M25/M4/M40 corridor.
Which cars do you Stage 1 remap most often?+
VW Golf GTI/R, Audi S3/S4/A4/A5/Q5, BMW 120d/320d/335d/520d/M140i/M240i/M340i, Mercedes A45/C220d/C43/GLC, Ford Focus ST/RS/Fiesta ST, Range Rover Sport SDV6/SDV8, Skoda Octavia vRS, SEAT Leon Cupra, Ford Transit Custom 2.0 EcoBlue.
Can I add a Stage 1 remap to a car that's already been mapped?+
Yes — we read the current file, benchmark it against the factory calibration, and either overwrite with our proven map or refine what's there. Free ECU health check on arrival.
Is the Stage 1 remap guaranteed?+
12-month software warranty, fully insured, dealer-grade AutoTuner / Alientech K-TAG kit. Payment Assist on jobs over £250.
★ 5.0 / 5 · 36 Google reviews
Trusted by drivers across West London
Related Services
StageMyCar UK is a mobile auto locksmith and ECU specialist serving West London, the M4 corridor, Heathrow, Slough, Reading and surrounding areas. Fixed-price quotes, DBS-checked engineers, fully insured, 7 days a week. Call 07312 826380 for an instant quote.