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
MOSTUNED / G30 520i
BMW G30 / 520i engine tuning · 300 HP
A complete 300 HP package for the B48B16-powered G30 / 520i. €750 includes ECU Unlock, engine tuning, coding and Stage 2/3 gearbox tuning with Gear Display. Installed in one visit in Ataşehir, Istanbul.
300 HPPerformance package
30 minApprox. installation time
750 €300 HP package
For compatible 1.6 B48B16 / MG1CS003 vehicles. The tune and timing are confirmed after checking your car and hardware.
MOSTUNED / PACKAGESMOSTUNED / BMW MOSTUNED / BMW
Packages and booking for G30 / 520i
300 HP, feature coding and gearbox tuning in one package. Choose 321 Edition for 321 HP / 500 Nm.
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
Features depend on vehicle equipment and software compatibility. 321 Edition requires a downpipe and E30 fuel.
G30 520i: is the 300 HP package right for your car?
| Check | Package coverage |
|---|---|
| Chassis and engine | G30 / G30 LCI · 1.6 B48B16 / MG1CS003 |
| Power and torque level | 300 HP / 400 Nm |
| Fuel and hardware | 95 RON petrol is sufficient. The 300 HP package is for stock hardware; a downpipe or E30 is not required. |
| ECU Unlock | Included in the €750 complete package. |
The year or 520i badge alone is not enough. We check the engine, ECU and installed software; do not assume this coverage applies to an F10 or G60 520i.
MOSTUNED / ATAŞEHİR
Our G30 520i 300 HP installation
This G30 received 300 HP / 400 Nm engine tuning, unlock and Stage 1 TCU. See the vehicle photo and original post.
520i · 300 HP engine tuning
This 520i received 300 HP / 400 Nm engine tuning, unlock and Stage 1 gearbox tuning, with the exhaust flap configured to stay open in every driving mode.
Vehicle & work details
- Vehicle
- BMW G30 520i
- Completed work
- 300 HP / 400 Nm, Unlock, Stage 1 TCU, Exhaust flap control
- Workshop
- MOSTUNED · Ataşehir / İstanbul
02 / PACKAGE FEATURES
More than a power increase.
We configure the features supported by your car and package.
Sport Mode Burble
Adjust intensity and RPM range in the app. Active in Sport mode only.
Sport Cooling
Switch the cooling setting on or off in the app.
Cold Start
Cold-start suppression for your preferred startup behaviour.
RPM Limiter
An optional RPM limit, for example 2,500 rpm.
OPF / DP calibration
A calibration option matched to your exhaust hardware.
Stage 2 / Stage 3 TCU
Gearbox tuning with Gear Display and feature coding in the complete package.
MOSTUNED / BMW SOFTWARE
Why MOSTUNED?
Focused on BMW tuning.
From calibration to everyday use.
Our calibration. Our app.
Our own MOSTUNED Flasher is included at no extra cost with every engine tuning package. Access your VIN-authorised package from our iPhone app.
Explore the appOne visit. A complete package.
The 300 HP package combines ECU Unlock, engine tuning, feature coding and Stage 2/3 gearbox tuning with Gear Display.
See the packageYour settings, within reach.
On a compatible car, adjust burble intensity and RPM range in the app, and switch Sport Cooling on or off.
How does it work?See the work before you choose.
Real BMWs, completed installations and available Dragy records. Explore examples from our Ataşehir workshop.
Explore our projectsMOSTUNED / iOSMOSTUNED Flasher
MOSTUNED Flasher
included with your tune.
MOSTUNED Flasher is included at no extra cost with all our engine tuning packages. Access your VIN-authorised Flash package and vehicle data with our own iPhone app.
- FlashChoose your package and driving settings.
- LoggerMonitor live data and record driving logs.
- Unlock CheckCheck ECU lock status for free.
App demo screens.
How do you use MOSTUNED Flasher?
Four steps from connection to writing.
- 1 Install MOSTUNED on your iPhone. Connect using a compatible ENET or WiFi-ENET adapter and open the Connect tab.
- 2 Check the VIN and ECU details. In Flash > Ready Package, choose a calibration authorised for your VIN and the supported settings.
- 3 Keep the ignition on and engine off, with suitable battery charging support. Complete the app’s power and connection checks, then start writing.
- 4 Keep the app open and the connection active; do not switch off the ignition. Wait for the success message and follow the final on-screen instructions.
Selecting a setting in Flash does not change the car immediately; the write operation must finish to apply it. See the guide for preparation and detailed instructions.
G30 520i / MOSTUNED
Go deeper into the details.
Calibration levels, engine information and other services in one place.
Power and hardware options
Power by stage
Factory output 170 PS. Figures in metric horsepower (PS).
280 and 300 on stock hardware; 321 Edition needs a downpipe and E30 fuel. The stage is chosen from datalog data. Package-level comparison; not measured dyno results.
G30 520i tuning: power and hardware options
Calibration levels and hardware requirements. Vehicle-specific records are in Our Work.
| Power | Torque | Hardware |
|---|---|---|
| Stock · 170 HP | 250 Nm | factory |
| 280 HP | 380 Nm | stock hardware |
| 300 HP | 400 Nm | stock hardware |
| 321 HP | 500 Nm | downpipe + E30 fuel |
Power and torque figures describe package levels; this table is not a dyno measurement report.
Engine, compatibility and calibration details
520i engine and calibration compatibility
This package covers the 1.6 B48B16 / MG1CS003 engine-ECU combination in the G30 / G30 LCI 520i. Other generations or engines carrying the 520i badge are not assumed to have the same coverage.
Although package levels are shared with the 320i and 420i, the file is prepared for the vehicle’s ECU identity and installed software. The G30’s weight and hardware differ, so another model’s acceleration result is not presented as its result.
The 300 HP / 400 Nm package is for stock hardware and 95 RON petrol. 321 Edition is a separate option requiring a suitable downpipe and E30 fuel.
What does the software feel like on a 520i?
Engine and transmission are assessed together; package and gearbox level are selected for the vehicle’s hardware, condition and use.
Burble and Cold Start options are selected in Flash. Changes apply after the write operation completes, not when the option is tapped.
Fuel consumption varies with traffic, load, driving style and calibration. We do not promise identical consumption or acceleration for every car.
Other licence and BMW service prices
Other licence and BMW service prices
| Service | Note | Price |
|---|---|---|
| 321 Edition Complete Package | 321 HP / 500 Nm · complete 300 HP coverage + 321 Edition | 1.250 € |
| Flasher (write your own file) | No ready-made calibration | 350 € |
| Stage 2 gearbox (on its own) | Launch Control, Shifting Lights | €250 |
| Stage 3 gearbox (on its own) | Faster shifts, torque limit | €250 |
| Feature coding | By iDrive generation | €150 |
520i FAQ
Does the G30 520i 300 HP tune need 98 RON or E30?
No. 95 RON petrol is sufficient for the 300 HP / 400 Nm package; 98 RON or E30 is not required. The 321 Edition is a separate package requiring a downpipe and E30.
Is MOSTUNED Flasher included with the tune?
Yes. MOSTUNED Flasher is included with all our engine tuning packages at no extra cost. The Flash package in the app is authorised for your vehicle’s VIN.
Where is the work carried out?
At MOSTUNED, İnönü Mahallesi, Düzenli Sokak No:3/A, Ataşehir, Istanbul. Monday–Saturday 09:00–18:00; arrange an appointment before visiting.
Does the €750 price include gearbox tuning?
The 300 HP package described here includes unlock, engine tuning and Stage 2/3 gearbox tuning with Gear Display for compatible vehicles. Online Flash licence coverage is specified on the respective product pages.
Is the included Stage 2/3 gearbox software with Gear Display a Stage 2 engine tune?
No. Engine tuning concerns the ECU; gearbox tuning concerns the TCU. The €750 300 HP package combines the 300 HP engine level for stock hardware with Stage 2/3 gearbox software with Gear Display. The 321 HP engine level is a separate option requiring a suitable downpipe and E30 fuel. We confirm the engine target and gearbox work separately when planning your visit.
How much does G30 520i tuning cost?
The €750 complete 300 HP package includes ECU Unlock, feature coding, Stage 2/3 gearbox tuning and Gear Display. Burble, OPF/DP calibration, Sport Cooling, Cold Start and limiter settings are included for supported calibrations. 321 Edition (321 HP / 500 Nm) costs €1,250 complete, or €500 to upgrade an existing 300 HP package. Map Switch adds €500 or ID7/ID8 MGU Map Switch adds €1,000; these are separate alternatives.
How much power does a tuned G30 make?
The Turkish-market 1.6-litre 520i makes 170 PS and 250 Nm from the factory. MOSTUNED calibrations offer 280 HP / 380 Nm and 300 HP / 400 Nm on stock hardware, and 321 HP / 500 Nm with a suitable downpipe and E30 fuel.
Is tuning a G30 harmful?
The 300 HP package is for compatible B48B16 vehicles on stock hardware. Engine condition, service history, fuel and existing software are assessed together. 95 RON is sufficient for 300 HP / 400 Nm. Share existing faults and hardware changes before the work so we can confirm the calibration.
What is the difference between Stage 1 and Stage 2 on the G30 520i?
Stage 1 is software with no parts changed; with us that is the 280 / 300 HP level. Stage 2 needs a downpipe and E30 fuel; with us that is the 321 HP level. We have no ready-made package for Stage 3, which requires a turbo upgrade.
What is the 100–200 km/h time of a tuned G30?
100–200 times vary with the car, hardware, fuel and measurement conditions; we do not assign one time to every car on this package. The G30 520i installation is documented at the link below. An acceleration time from another G20 is not presented as a result for this model. View the vehicle record.
Where can I see G30 tuning reviews?
See the cars we have worked on at our work and customer reviews on our Google business profile, plus driving and timing videos on our YouTube channel.
Do you also do G30 transmission software?
Yes. Stage 2 and Stage 3 gearbox tuning with Gear Display each cost €250 as a standalone service. Gearbox tuning and feature coding are included in the €750 300 HP package. The stage is selected for your car and driving needs. Details: gearbox tuning.
Is the 520i really 1.6L?
Yes. The Turkish 520i (G30) ships with the 1.6L B48B16 — same engine as the 320i and 420i.
Worth it on a heavy car?
Yes — the 5 Series is heavier, so the torque gain is felt even more on the 520i. Same stages, clear day-to-day gain.
Same process as the 320i?
Same engine (B48B16 / MG1CS003), so the stages are identical; every write is prepared for your VIN.
Refunds?
No refunds once delivered; see terms of use.
Related BMW services and guides
G30 520i project examplesOur G30 520i installation: 300 HP / 400 Nm engine tuning, unlock and Stage 1 gearbox work. Vehicle photo and original post. →Workshop location and opening hoursMonday–Saturday 09:00–18:00; arrange your visit in advance. →BMW B48 tuningthe 1.6 B48 engine →BMW 420i chip tuningsame engine, 4 Series →See packages280 / 300 / 321 HP pricing →BMW G20 320i3 Series Sedan →
More options for your BMW
- G30 520i feature coding — Generation, iDrive and package features
- BMW G30 520i LCI Stage 2 Gearbox Tuning — LCI features and price; choose your generation for other versions.
Other BMW engine tuning options
- G20 / 320i · 300 HP engine tuning — B48B16 · Complete 300 HP package · €750
- G22 / G26 · 420i · 300 HP engine tuning — B48B16 · Complete 300 HP package · €750
- G01 X3 sDrive20i · 300 HP engine tuning — B48B16 · Complete 300 HP package · €750
- B48B16 · 300 HP engine tuning — Engine, ECU and compatibility details
MOSTUNED / ATAŞEHİR
İnönü Mah. Düzenli Sokak No:3/AYour 520i could be next.
Let’s arrange your visit and install your Flash package.
Contact us on WhatsApp ↗Ataşehir / İstanbul
Monday–Saturday 09:00–18:00
0547 470 40 40
Map and directions →