Chiptuning Land Rover Discovery II (until 2004)
2 engines · +17 to +22 hp
Land Rover Discovery II: 2 engines — 1 petrol and 1 diesel. The gain is +17 to +22 hp, with up to +41 Nm more torque. GAN GA+ from 189 EUR.
All Land Rover Discovery II engines: exact gains
Standard output, output with GAN, the gain and the price for each box. Diesel and petrol engines are listed separately.
| Engine | STOCK → with GAN | Gain | Tuning boxes and prices | |
|---|---|---|---|---|
| Diesel · 1 engine | ||||
| 2.5 TD5138 hp / 300 Nm | +17 hp+36 Nm |
GA — 189 EUR · 155 hp GA+ — 189 EUR · 155 hp |
Select → | |
| Petrol · 1 engine | ||||
| 4.0i185 hp / 340 Nm | +22 hp+41 Nm |
GA — 189 EUR · 207 hp GA+ — 189 EUR · 207 hp |
Select → | |
Each engine has its own tuning box: GAN GT / GTL or GAN GA / GA+. Prices are per box and include the current discount.
Not sure which engine you have?
Find your engine by the power output in your registration document: each version has its own module calibration.
Land Rover Discovery II remap: what changes
More power and torque without rewriting the ECU or swapping any parts. The GAN box only adjusts the engine sensor signals. Your manufacturer’s warranty is preserved: the ECU software is never changed, and the box can be removed at any time.
- Bluetoothchange modes from your phone
- 18 mapsfine-tuning for your engine

- 15 minutesfitted to the factory connectors
- IP67water and dust protection
- +22 hpbest in this generation
4.0i 185 hp → 207 hp. The other engines gain at least +17 hp; check the table for each one.
- +36 Nmfor diesels
Diesels gain mostly torque: +36 to +36 Nm, which helps with overtaking and towing.
- GAN APPpower control via smartphone
SPORT, DYNAMIC, ECO and STOCK modes in the GAN app.
- 50 daystest drive
Feel the difference or get your money back, excluding delivery costs.
Land Rover Discovery II remap: common questions
Which tuning box do I need for the Land Rover Discovery II?
Every engine in this generation is naturally aspirated, so it takes the GAN GA or GAN GA+. Find your engine in the table above – each row shows the box and its price.
Is a tuning module the same as a Stage 1 remap?
Not quite. Stage 1 usually means an ECU remap without replacing any parts. The tuning module also works without replacing parts, but it does not change the ECU software: it adjusts the sensor signals, comes off in about a minute, and the OFF button in the app restores the factory settings.