Chiptuning Lexus IS I (until 2005)
5 engines · +19 to +26 hp
Lexus IS I: 5 engines — 5 petrol. The gain is +19 to +26 hp, with up to +35 Nm more torque. GAN GA+ from 189 EUR.
All Lexus IS I 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 | ||||
| 300214 hp / 288 Nm | +26 hp+35 Nm |
GA — 199 EUR · 240 hp GA+ — 199 EUR · 240 hp |
Select → | |
| 300218 hp / 295 Nm | +26 hp+35 Nm |
GA — 199 EUR · 244 hp GA+ — 199 EUR · 244 hp |
Select → | |
| 300210 hp / 289 Nm | +25 hp+35 Nm |
GA — 199 EUR · 235 hp GA+ — 199 EUR · 235 hp |
Select → | |
| 200 Kompressor186 hp / 225 Nm | +22 hp+27 Nm |
GA — 189 EUR · 208 hp GA+ — 189 EUR · 208 hp |
Select → | |
| 200155 hp / 195 Nm | +19 hp+23 Nm |
GA — 189 EUR · 174 hp GA+ — 189 EUR · 174 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 IS I 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
- +26 hpbest in this generation
300 214 hp → 240 hp. The other engines gain at least +19 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 IS I remap: common questions
Which tuning box do I need for the Lexus IS I?
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.