Torque and boost alignment
The torque model and boost targets are updated together so the ECU stops pulling itself back.
BMW Stage 1 remap
Stage 1 is a calibration done without changing a single part. It makes usable some of the margin the factory left for varying fuel quality, climate and long service intervals — while staying underneath the safety limits.
What Stage 1 covers
Ignition and fuelling
Advance and mixture targets are aligned to the octane you actually run.
Throttle response
The pedal-to-torque curve is corrected; the car feels noticeably more awake even at the same output.
Protections untouched
Knock detection and thermal and pressure limiters are not disabled.
Original backup
The stock calibration is fully read out before writing. Going back is always possible.
Datalog if you want
You can record a road datalog and we review it together — but the files are tested, a datalog is not required.
Who is Stage 1 for?
If your car is completely standard and you want better response and stronger mid-range for everyday driving, Stage 1 is the right choice. If you are not planning to change the exhaust or intake, there is nothing to gain from a higher stage.
Servicing matters. If the plugs are at the end of their life, there is carbon build-up, or you suspect a boost leak, a calibration will not cover that up — it will amplify it. That is why we may suggest a datalog analysis first to check the car's health.
Verified coverage: Turkish-market BMWs with the 1.6L B48B16 (1,597 cc / MG1CS003 ECU) engine — 320i (G20), 420i (G22/G26), 520i (G30) and X3 sDrive20i (G01). Coverage is expanding and will be announced here; ask anyway if your car is not listed.
Stage 1, Stage 2 and MOSTUNED packages
| Hardware | MOSTUNED | |
|---|---|---|
| Stage 1 | Stock — no parts changed | 280 / 300 HP |
| Stage 2 | Downpipe (and intake) + suitable fuel | 320 HP |
Checklist before Stage 1
- Is servicing up to date? Plugs, oil and air filter should not be at the end of their life.
- Any stored fault codes? Fault reading is free in the MOSTUNED app.
- Is the ECU locked? Unlock Check is free; if it is locked, unlock comes first.
- Which fuel do you use? The calibration is chosen for your fuel quality.
Stage 1 questions
Does Stage 1 harm the engine?
Stage 1 uses part of the margin the factory left; temperature, knock and torque protections stay in place. On a well-serviced car it suits daily use, but as with any modification the risk is not zero, and on a neglected car it magnifies existing problems.
How much does Stage 1 cost?
The 280 / 300 HP level on stock hardware costs €750 including Flasher, or €500 if you already own Flasher.
How much power will I gain?
It depends on the engine code, fuel octane, the age of the car and how well it has been maintained. Rather than quote an invented number, we tell you the expected range once we have your car's details.
Do I need to change any parts?
No — that is the definition of Stage 1. Once you do change hardware, the calibration has to be updated, and that is where Stage 2 comes in.
Which fuel should I use?
Whichever octane the calibration was built around. Drop below it and the ECU will retard ignition to protect itself, and you will lose the gain.
How quickly is it delivered?
Authorisation is usually completed the same day; you write the file whenever it suits you.
Related pages
- Stage 2 remap — once you add hardware
- BMW remapping guide — technical background
- Remote flashing — how the file is written
- Datalog analysis — health check first
Contact
Get in touch
WhatsApp: +90 547 470 40 40
Email: destek@mostuned.com
Instagram: @mostuned
Istanbul · Monday–Saturday 09:00–18:00 (TR time) · Remote service by appointment
Not sure?
Send your model, hardware and goal — we will pick the right package together. We do not sell what does not fit.