Land Rover Discovery III (LR3) 2004-2009 4.4 V8 300bhp remap figures
Stock, this 2004-2009 Land Rover Discovery III petrol (4.4L) produces 300bhp and 427Nm. Our expected figures for a Stage 1 remap are 335bhp and 473Nm, an expected gain of up to 35bhp and 46Nm.
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 | 300 bhp | 335 bhp | +35 bhp |
| Torque | 427 Nm | 473 Nm | +46 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 300 bhp | 427 Nm | |
| Stage 1Maximum software-only performance | 335 bhp | 473 Nm | +35 bhp +46 Nm |
| Stage 1 EcoPerformance with economy in mind | 326 bhp | 469 Nm | +26 bhp +42 Nm |
| Eco mapEconomy first | 323 bhp | 467 Nm | +23 bhp +40 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 Discovery III
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 Denso. Older engine management is simpler to work with, but age matters: worn sensors, leaks and tired components can hold back what a remap delivers, which is why we run a diagnostic check first.
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 Land Rover Discovery III 4.4 V8 300bhp?
We expect 335bhp and 473Nm against 300bhp and 427Nm as standard: up to +35bhp and +46Nm. 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 Land Rover Discovery III 4.4 V8 300bhp?
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: 326bhp and 469Nm expected. The Eco map is economy first: 323bhp and 467Nm. Both still sit above the standard 300bhp and 427Nm.
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 Land Rover Discovery III figures
Other petrol variants
All petrol Discovery III (LR3) variants · Discovery III (LR3) 2004-2009 overview · All Land Rover figures