BMW 4 Series (F3X) 2016> 430i (B48) 248bhp remap figures
Stock, this 2016> BMW 4 Series petrol (2.0L) produces 248bhp and 350Nm. Our expected figures for a Stage 1 remap are 285bhp and 452Nm, an expected gain of up to 37bhp and 102Nm.
Choose your map
Stage 1 remap figures
A Stage 1 remap is a software-only change to the ECU on an otherwise standard car. It needs no extra parts, which makes it the usual starting point.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 248 bhp | 285 bhp | +37 bhp |
| Torque | 350 Nm | 452 Nm | +102 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 248 bhp | 350 Nm | |
| Stage 1Maximum software-only performance | 285 bhp | 452 Nm | +37 bhp +102 Nm |
| Stage 1 EcoPerformance with economy in mind | 276 bhp | 444 Nm | +28 bhp +94 Nm |
| Eco mapEconomy first | 273 bhp | 439 Nm | +25 bhp +89 Nm |
Who is the Stage 1 map for?
- Drivers who want a sharper throttle and a small, honest gain from software alone.
- Owners who would rather keep the car standard in every other way.
- Anyone who wants the fullest software-only map for this engine, accepting that the gain is modest without a turbocharger.
What this means for your 4 Series
Naturally aspirated petrol engines have no boost to raise, so gains from software alone are more modest than on a turbocharged car and come from fuelling, ignition and throttle response.
This car is listed with a Bosch MG1CS003 engine control unit. Newer ECUs often protect their software, so we read the exact unit and version on the car before confirming the figures on this page.
We remap at our Belgrave Gate workshop in Leicester, or at your home or work within 30 miles, and every job starts with a diagnostic check.
Please note: these are expected figures, not guarantees. Real results vary with the condition of the vehicle, the ECU software version, fuel quality and the hardware fitted. Some options - including Stage 2 and anything that needs extra hardware - are for off-road or competition use only. We check every vehicle first and confirm what is achievable before any work starts.
Figures reviewed 22 October 2026.
Stage 1 questions
How much power does the Stage 1 map give the BMW 4 Series 430i (B48) 248bhp?
We expect 285bhp and 452Nm against 248bhp and 350Nm as standard: up to +37bhp and +102Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
Does a Stage 1 remap need any extra parts on the BMW 4 Series 430i (B48) 248bhp?
No. Stage 1 is a software-only change to the ECU on an otherwise standard car.
Is there a gentler map than Stage 1 for this engine?
Yes, two. Stage 1 Eco is performance with economy in mind: 276bhp and 444Nm expected. The Eco map is economy first: 273bhp and 439Nm. Both still sit above the standard 248bhp and 350Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
More BMW 4 Series figures
Other petrol variants
- 428i (N20) 241bhp 2013-2015
- 435i 301bhp 2013>
- 420i (B48) 181bhp 2016>
- 440i 322bhp 2016>
- M4 424bhp 2013>
- M4 443bhp 2016>
- M4 GTS 493bhp 2016>
All petrol 4 Series (F3X) variants · 4 Series (F3X) 2013> overview · All BMW figures