BMW PERFORMANCE · MOSTUNEDİstanbul / Ataşehir
MOSTUNED
Write your own file

MOSTUNED Flasher

€350 one-time
  • Write your own or your tuner's file
  • Crackle, OPF/DP, Vmax, cold start, RPM settings
  • Original backup + return to stock
  • No ready HP maps included
Pay on Stripe's page

Payment is processed by Stripe right here on this page; your card details never reach us. Access is granted automatically to the VIN you enter.

✓ Original backup taken ✓ Secure Stripe payment ✓ Add 280/300 later for €500
The MOSTUNED app: Flash tab, file selection and write

Flash access for your VIN

Flash works for VINs authorised by MOSTUNED. Confirm vehicle, ECU and unlock compatibility before buying a package. Free tools do not include a Flash licence.

MOSTUNED / PACKAGES

Choose your power. Complete your package.

300 HP, feature coding and gearbox tuning in one package. Choose 321 Edition for 321 HP / 500 Nm.

MOSTUNED / BMW

300 HP Complete Package

€750
  • ECU Unlock + 300 HP engine tune
  • MOSTUNED Flasher included at no extra cost
  • Feature coding package
  • Stage 2 or Stage 3 gearbox + Gear Display
  • Burble · OPF/DP calibration · Sport Cooling
  • Cold Start · Vmax · RPM Limiter
Explore package ↗
MOSTUNED / BMW

321 Edition Complete Package

€1,250
  • 321 HP · 500 Nm
  • MOSTUNED Flasher included at no extra cost
  • All services in the 300 HP complete package
  • Feature coding + Stage 2/3 + Gear Display
  • Requires a downpipe and E30 fuel
  • Map Switch options are added separately
Explore package ↗
MOSTUNED / UPGRADE

321 Edition Upgrade

+€500
  • For an existing MOSTUNED 300 HP package
  • 321 HP · 500 Nm
  • Requires a downpipe and E30 fuel
Explore package ↗

Features depend on vehicle equipment and software compatibility. 321 Edition requires a downpipe and E30 fuel.

Included with the Flasher

Toggles you control from the app, on top of your own file. For track / closed-road use; road legality is the user's responsibility.

Sound

Crackle / Pops (adjustable)

Controlled crackle and pops from the exhaust. Rev range, speed and intensity are set from the app — without risking engine health.

Cold

Cold Start Delete

Silences the high-idle, noisy warm-up on cold starts.

Speed

Speed Limiter Off

Removes the factory electronic speed limit (Vmax).

RPM

RPM Limiter

Adjusts the rev limit to your needs.

Exhaust

OPF / DP Calibration

Compatible calibration for particulate-filter delete or downpipe cars.

Cooling

Sport Cooling

Earlier, more aggressive cooling for high load and track use.

Who is it for?

For people who already have a file: write the .bin or .mos you got from your own tuner from your own iPhone, without handing the car to anyone. No file is delivered — the Flasher is write access.

Want the ready 280/300 HP package later? Add it for €500. Buying together is cheaper: Flasher + 280/300 €750, Full €1,250.

A full backup of the original software is taken; you can return to stock at any time.

Requirements

Turkish-market 1.6 B48B16 (MG1CS003 ECU) models — 320i (G20), 420i (G22/G26), 520i (G30), X3 sDrive20i (G01). Post-June-2020 cars need the ECU unlocked — the app checks for free; if locked, we do the unlock.

iPhone + ENET/WiFi-ENET adapter. The file must be built for MG1CS003; the app refuses incompatible files.

FAQ

Do you supply a file?

Not with this package. The Flasher is write access only; for a ready calibration see the 280/300 or Full package.

Does my tuner's file need to be locked to MOSTUNED?

No. A standard .bin or a dealer .mos file is written. Before writing, the app checks the file against the ECU version.

Refunds?

No refunds once access is granted; see the terms of use.

Related

Before you buy

Contact

Not sure?

Send your model, hardware and goal — we will pick the right package together. We do not sell what does not fit.

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