Performance Chip Tuning Audi S8 D4 (2012–2017)
2 engines · +88 to +103 hp
Audi S8 D4: 2 engines — 2 gas. Gains run from +88 to +103 hp, with up to +128 Nm more torque. GAN GTL from 379 EUR, GAN GT from 519 EUR.
All Audi S8 D4 engines: exact gains
STOCK output, output with GAN, gain and price for each module.
| Engine | STOCK → with GAN | Gain | Tuners and prices | |
|---|---|---|---|---|
| Gasoline · 2 engines | ||||
| 4.0 TFSI605 hp / 750 Nm | +103 hp+128 Nm |
GTL — 379 EUR · 690 hp GT — 519 EUR · 708 hp |
Select → | |
| 4.0 TFSI519 hp / 650 Nm | +88 hp+111 Nm |
GTL — 379 EUR · 592 hp GT — 519 EUR · 607 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:
Audi S8 D4 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
- +103 hpbest in this generation
4.0 TFSI 605 hp → 708 hp. The other engines gain +88 hp and up; check the table for each one.
- up to +30%more power
GAN GT: up to 30%, GAN GTL: up to 25%, GAN GA+: up to 12%.
- GAN APPpower control via smartphone
Switch between SPORT, DYNAMIC, ECO and STOCK in the GAN app.
- 50 daystest drive
Enhanced performance or your money back, excluding shipping costs.
Audi S8 D4 tuning FAQ
Which tuner do I need for my Audi S8 D4?
Every engine in this generation is turbocharged, so you’ll want the GAN GT or GAN GTL. 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.