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
N47 · B47 · E90 · F30 · F31 · G20 ///
Stage 1 BMW 320d Remap. From £299.
Custom Stage 1 320d tune — N47 and B47 covered. 184/190 bhp → 240+ bhp, 280 → 380 ft-lb. Mobile to your driveway.
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
Get An Instant Remap & Package Quote
Enter your reg & postcode. Tick any extras — we'll send a tailored quote via WhatsApp in minutes.
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0/600
Custom-written maps · Lifetime software warranty · Dyno-verified figures
No spam · No obligation · Fixed pricing confirmed before we attend
Professional. Mobile. Trusted.
The BMW 320d is the most-tuned BMW in the UK. Both N47 (pre-2015) and B47 (2015+) engines respond exceptionally well to a Stage 1 remap. We write the file in-house, datalog before and after, and pair it with EGR-soft and DPF-friendly mapping. Mobile across West London, Slough, Heathrow, Reading, Watford, Bracknell, Maidenhead.
- E90 / E91 320d N47 — 184 → 240 bhp
- F30 / F31 320d B47 — 190 → 245 bhp
- G20 320d B47 — 190 → 250 bhp
- Torque: 280 → 380 ft-lb
- Custom-written file — never generic
- Before/after datalogging
- 12-month software warranty
- Free revert before dealer visits
- DPF / EGR-friendly mapping
- Mobile · same day
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
How much is a Stage 1 BMW 320d remap?+
£299 mobile to your driveway. Includes custom file, before/after logging and 12-month software warranty.
Power & torque gains on a 320d?+
N47 (E90/F30 184bhp): 184 → 235-245 bhp, 280 → 360-380 ft-lb. B47 (F30/F31/G20 190bhp): 190 → 240-250 bhp, 295 → 380-400 ft-lb.
Will the dealer detect it?+
F-chassis OBD flashes leave a marker. Bench flashes do not. We provide free revert-to-stock before any dealer visit, typically removing all trace.
MPG after a 320d remap?+
Most owners gain 3-7 mpg on cruise once they adapt their right foot. Off-boost mapping is unchanged.
Insurance?+
You must declare it. Most mainstream insurers add £40-£90/year — we provide a written spec for your broker.
Is it safe on the N47 timing chain?+
Yes — Stage 1 stays within OEM peak torque limits and does not stress the chain. We won't tune cars with audible chain rattle until it's addressed.
★ 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.