BMW 1 Series (F2X) 2016> M140i 335bhp remap figures
The BMW 1 Series M140i 335bhp (2016>) is a petrol 3.0L model making 335bhp and 500Nm as standard. After a Stage 1 ECU remap we expect 436bhp and 622Nm - up to 101bhp and 122Nm more than stock.
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 | 335 bhp | 436 bhp | +101 bhp |
| Torque | 500 Nm | 622 Nm | +122 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 335 bhp | 500 Nm | |
| Stage 1Maximum software-only performance | 436 bhp | 622 Nm | +101 bhp +122 Nm |
| Stage 1 EcoPerformance with economy in mind | 411 bhp | 612 Nm | +76 bhp +112 Nm |
| Eco mapEconomy first | 403 bhp | 606 Nm | +68 bhp +106 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 1 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.
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 1 Series M140i 335bhp?
We expect 436bhp and 622Nm against 335bhp and 500Nm as standard: up to +101bhp and +122Nm. 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 1 Series M140i 335bhp?
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: 411bhp and 612Nm expected. The Eco map is economy first: 403bhp and 606Nm. Both still sit above the standard 335bhp and 500Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.