Chip Tuning BMW 7 Series E38 (2001)
6 engines · +23 to +66 hp
BMW 7 Series E38: 6 engines — 2 petrol and 4 diesel. Gains range from +23 to +66 hp, with up to +129 Nm of torque. GAN GTL from 249 EUR, GAN GT from 399 EUR. GAN GA+ from 199 EUR.
All BMW 7 Series E38 engines: exact gains
STOCK output, output with GAN, gain and price for each module. Diesel and petrol engines are listed separately.
| Engine | STOCK → with GAN | Gain | Tuning modules and prices | |
|---|---|---|---|---|
| Diesel · 4 engines | ||||
| 740d245 hp / 560 Nm | +66 hp+129 Nm |
GTL — 249 EUR · 301 hp GT — 399 EUR · 311 hp |
Select → | |
| 730d193 hp / 410 Nm | +54 hp+107 Nm |
GTL — 249 EUR · 239 hp GT — 399 EUR · 247 hp |
Select → | |
| 730d184 hp / 390 Nm | +52 hp+103 Nm |
GTL — 249 EUR · 228 hp GT — 399 EUR · 236 hp |
Select → | |
| 740d238 hp / 560 Nm | +40 hp+95 Nm |
GTL — 249 EUR · 271 hp GT — 399 EUR · 278 hp |
Select → | |
| Petrol · 2 engines | ||||
| 750i326 hp / 490 Nm | +26 hp+39 Nm |
GA — 219 EUR · 352 hp GA+ — 219 EUR · 352 hp |
Select → | |
| 740i286 hp / 400 Nm | +23 hp+32 Nm |
GA — 199 EUR · 309 hp GA+ — 199 EUR · 309 hp |
Select → | |
Each engine has its own tuning module: GAN GT / GTL or GAN GA / GA+. Prices are per tuning module and include the current discount.
Not sure which engine you have?
The badge alone is not enough: in this generation, the same engine designation came in different power outputs, each with its own calibration. Check the power output in your registration document and find the matching row.
Same badge, different factory power outputs in this generation:
BMW 7 Series E38 tuning: what changes
The tuning module sits between the sensors and the engine control unit (ECU) and adjusts their signals. Your manufacturer’s warranty is preserved: the ECU software is never changed, and the module can be removed at any time.
- Bluetoothsmartphone mode control
- 18 mappingsfine tuning for your engine
- 15 minutesfitted to the factory connectors
- IP67water and dust protection
- +66 hpbest in this generation
740d 245 hp → 311 hp. The other engines gain from +23 hp; see the table for each one.
- +129 Nmfor diesels
Diesels gain mainly torque: +95 to +129 Nm.
- up to +12%with the GAN GA+ on naturally aspirated engines
For 2 naturally aspirated engines: GAN GA / GAN GA+ tuning modules; see the table for each engine’s figure.
- 50 daystest drive
Enhanced performance or your money back, excluding delivery costs.
What BMW 7 Series owners say about GAN
After first minutes of using, the engine thrust increased, I can notice a better response of the acceleration pedal, and the fuel consumption decreased (about a liter) . At this moment everything is perfect.
BMW 7 Series E38 chip tuning: questions
Which tuning module do I need for the BMW 7 Series E38?
Turbocharged engines take the GAN GT or GAN GTL, naturally aspirated ones the GAN GA or GAN GA+. Find your engine in the table above: each row shows the module and the price.
Is a tuning module the same as a Stage 1 tune?
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.