BMW 3 Series (F3X) 2015> 330e (B48B20A) 252bhp remap figures
Thinking of remapping a BMW 3 Series 330e (B48B20A) 252bhp? The standard car makes 252bhp and 420Nm; with a Stage 1 remap from our Leicester workshop we expect around 365bhp and 541Nm, up to +113bhp and +121Nm.
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 | 252 bhp | 365 bhp | +113 bhp |
| Torque | 420 Nm | 541 Nm | +121 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 252 bhp | 420 Nm | |
| Stage 1Maximum software-only performance | 365 bhp | 541 Nm | +113 bhp +121 Nm |
| Stage 1 EcoPerformance with economy in mind | 337 bhp | 531 Nm | +85 bhp +111 Nm |
| Eco mapEconomy first | 328 bhp | 525 Nm | +76 bhp +105 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 3 Series
Without a turbocharger the improvement comes from ignition, fuelling and throttle mapping rather than boost, so expect a smaller but still noticeable change in response.
The ECU recorded for this variant is a Bosch MG1CS003. 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 3 Series 330e (B48B20A) 252bhp?
We expect 365bhp and 541Nm against 252bhp and 420Nm as standard: up to +113bhp and +121Nm. 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 3 Series 330e (B48B20A) 252bhp?
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: 337bhp and 531Nm expected. The Eco map is economy first: 328bhp and 525Nm. Both still sit above the standard 252bhp and 420Nm.
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 3 Series figures
Other petrol variants
- 330i (B48) 248bhp 2015>
- 328i (N20) 241bhp 2012-2015
- 335i 301bhp 2012>
- 340i 322bhp 2017>
- 320i (B48) 181bhp 2015>
- 3.0 ActiveHybrid 335bhp 2012>
- 320i (1.6) 167bhp 2012>
- 318i (1.5) 134bhp 2015>
- 316i 134bhp 2012>
- M3 424bhp 2014>
All petrol 3 Series (F3X) variants · 3 Series (F3X) 2012-2019 overview · All BMW figures