Chiptuning Lexus GS II (until 2005)
5 engines · +23 to +28 hp
Lexus GS II: 5 engines — 5 petrol. The gain is +23 to +28 hp, with up to +36 Nm more torque. GAN GA+ from 199 EUR.
All Lexus GS II engines: exact gains
Standard output, output with GAN, the gain and the price for each box.
| Engine | STOCK → with GAN | Gain | Tuning boxes and prices | |
|---|---|---|---|---|
| Petrol · 5 engines | ||||
| 300233 hp / 298 Nm | +28 hp+36 Nm |
GA — 199 EUR · 261 hp GA+ — 199 EUR · 261 hp |
Select → | |
| 300228 hp / 298 Nm | +27 hp+36 Nm |
GA — 199 EUR · 255 hp GA+ — 199 EUR · 255 hp |
Select → | |
| 300219 hp / 282 Nm | +26 hp+34 Nm |
GA — 199 EUR · 245 hp GA+ — 199 EUR · 245 hp |
Select → | |
| 400294 hp / 420 Nm | +24 hp+34 Nm |
GA — 199 EUR · 318 hp GA+ — 199 EUR · 318 hp |
Select → | |
| 430283 hp / 434 Nm | +23 hp+35 Nm |
GA — 199 EUR · 306 hp GA+ — 199 EUR · 306 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?
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:
Lexus GS 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
- +28 hpbest in this generation
300 233 hp → 261 hp. The other engines gain at least +23 hp; 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
SPORT, DYNAMIC, ECO and STOCK modes in the GAN app.
- 50 daystest drive
Feel the difference or get your money back, excluding delivery costs.
Lexus GS II remap: common questions
Which tuning box do I need for the Lexus GS 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.