BMW 5 Series (F1X) 2009> 550i 401bhp remap figures
Stock, this 2009> BMW 5 Series petrol (4.4L) produces 401bhp and 601Nm. Our expected figures for a Stage 1 remap are 475bhp and 697Nm, an expected gain of up to 74bhp and 96Nm.
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 | 401 bhp | 475 bhp | +74 bhp |
| Torque | 601 Nm | 697 Nm | +96 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 401 bhp | 601 Nm | |
| Stage 1Maximum software-only performance | 475 bhp | 697 Nm | +74 bhp +96 Nm |
| Stage 1 EcoPerformance with economy in mind | 457 bhp | 689 Nm | +56 bhp +88 Nm |
| Eco mapEconomy first | 451 bhp | 685 Nm | +50 bhp +84 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 5 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.
Engine management is by a Bosch MEVD17.2.8(H) unit. 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 questions
How much power does the Stage 1 map give the BMW 5 Series 550i 401bhp?
We expect 475bhp and 697Nm against 401bhp and 601Nm as standard: up to +74bhp and +96Nm. 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 5 Series 550i 401bhp?
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: 457bhp and 689Nm expected. The Eco map is economy first: 451bhp and 685Nm. Both still sit above the standard 401bhp and 601Nm.
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 5 Series figures
Other petrol variants
- 550i 442bhp 2013>
- 550i 443bhp 2012>
- 3.0 ActiveHybrid 335bhp 2012>
- 535i 301bhp 2009>
- M5 552bhp 2011>
- 528i 241bhp 2009>
- M5 566bhp 2013>
- 525i 214bhp 2009>
- M5 30 Jahre Edition 591bhp 2014>
All petrol 5 Series (F1X) variants · 5 Series (F1X) 2011-2016 overview · All BMW figures