Performance Chip Tuning BMW 7 Series E38 (2001)
6 engines · +23 to +66 hp
BMW 7 Series E38: 6 engines — 2 gas and 4 diesel. Gains run from +23 to +66 hp, with up to +129 Nm more 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 gasoline engines are listed separately.
| Engine | STOCK → with GAN | Gain | Tuners 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 → | |
| Gasoline · 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 gets its own performance chip: GAN GT / GTL or GAN GA / GA+. Prices are per performance chip and include the current discount.
Not sure which engine you have?
The badge alone isn’t enough: in this generation, the same engine came with different horsepower ratings, each with its own calibration. Check the horsepower in your owner’s manual or vehicle documents and find the matching row.
Same badge, different factory power outputs in this generation:
BMW 7 Series E38 tune: what changes
The module plugs in between the sensors and the engine control unit (ECU) and adjusts their signals. It never rewrites your ECU software: your factory warranty is preserved, and the module can be removed at any time.
- Bluetoothswitch modes from your phone
- 18 mapsto fine-tune your engine
- 15 minutesplug-and-play install
- IP67water and dust protection
- +66 hpbest in this generation
740d 245 hp → 311 hp. The other engines gain +23 hp and up; check the table for each one.
- +129 Nmfor diesels
Diesels gain mostly torque: +95 to +129 Nm for towing and hauling.
- up to +12%with the GAN GA+ on naturally aspirated engines
For 2 naturally aspirated engines: the GAN GA / GAN GA+ tuners; check the table for each engine’s numbers.
- 50 daystest drive
Enhanced performance or your money back, excluding shipping 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 tuning FAQ
Which tuner do I need for my BMW 7 Series E38?
Turbo engines take the GAN GT or GAN GTL; naturally aspirated engines take the GAN GA or GAN GA+. Find your engine in the table above – each row shows the tuner and the price.
Is a tuning module the same as a Stage 1 tune?
Not quite. Stage 1 usually means an ECU flash tune 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.