BMW 4 Series (F3X) 2013> 425d 214bhp Stage 1 Eco remap figures
The Stage 1 Eco map for the BMW 4 Series 425d 214bhp (2013>): 264bhp and 555Nm expected from a standard 214bhp and 450Nm, up to +50bhp and +105Nm. It keeps most of the Stage 1 gain (Stage 1 is 281bhp and 564Nm) and is tuned with economy in mind: the choice if you want the performance and care what each tank costs.
Choose your map
Stage 1 Eco remap figures
Stage 1 Eco is performance with economy in mind. It keeps most of the Stage 1 gain, so the car still pulls well, but the map is shaped for efficient, relaxed driving rather than flat-out output. It is above the standard figures. We don't quote mpg, because economy depends on the car and how it is driven.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 214 bhp | 264 bhp | +50 bhp |
| Torque | 450 Nm | 555 Nm | +105 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 214 bhp | 450 Nm | |
| Stage 1Maximum software-only performance | 281 bhp | 564 Nm | +67 bhp +114 Nm |
| Stage 1 EcoPerformance with economy in mind | 264 bhp | 555 Nm | +50 bhp +105 Nm |
| Eco mapEconomy first | 259 bhp | 549 Nm | +45 bhp +99 Nm |
Who is the Stage 1 Eco map for?
- Drivers who want the pull of a remap for overtaking, motorways and towing, with the engine tuned with economy in mind.
- High-mileage drivers who want better performance and a more efficient everyday car in one map.
- Anyone who would otherwise take full Stage 1 but cares what each tank costs.
How Stage 1 Eco compares with Stage 1
Full Stage 1 on this BMW 4 Series is expected to give 281bhp and 564Nm (+67bhp, +114Nm). The Stage 1 Eco keeps about 75% of that power gain and 92% of the torque gain, so you get 264bhp and 555Nm: 17bhp less and 9Nm less than Stage 1, with the map shaped for efficient, relaxed driving, so it suits you if you want the pull and care about running costs. Both sit above the standard 214bhp and 450Nm.
What this means for your 4 Series
Diesel remaps work mainly on boost pressure, fuel delivery and torque limiters, which is why the Nm gain is usually the figure you feel in everyday driving, particularly when overtaking or towing.
The ECU recorded for this variant is a Bosch EDC17CP45. We read the ECU on your car and compare it with the software listed here before any work starts, so you know what to expect before you commit.
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 Eco questions
How much power does the Stage 1 Eco map give the BMW 4 Series 425d 214bhp?
We expect 264bhp and 555Nm against 214bhp and 450Nm as standard: up to +50bhp and +105Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
How does Stage 1 Eco differ from Stage 1 on this engine?
Full Stage 1 is expected to give 281bhp and 564Nm. Stage 1 Eco gives 17bhp less and 9Nm less, in exchange for a map shaped with economy in mind. It still sits above the standard figures.
Is Stage 1 Eco or the Eco map better for me?
Choose Stage 1 Eco if you want the performance (264bhp and 555Nm) and still care about running costs. Choose the Eco map (259bhp and 549Nm) if economy matters more than pace.
Will the Stage 1 Eco map save fuel?
It is tuned with economy in mind while keeping most of the Stage 1 performance. We do not quote mpg figures, because economy depends on the car, its condition and how it is driven.
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 diesel variants
- 420d 187bhp 2015>
- 420d 181bhp 2013>
- 430d 254bhp 2013>
- 418d 147bhp 2015>
- 418d 143bhp 2014>
- 435d 308bhp 2013>
All diesel 4 Series (F3X) variants · 4 Series (F3X) 2013> overview · All BMW figures