| engine type | Original performance | Performance after tuning | Vmax | More efficient | price |
|---|---|---|---|---|---|
| 1.8 16V | 92 kW (125 hp) | 104 kW (141 hp) +26 Nm | * | + 16 hp | 420€ |
| 2.0 boxer | 110 kW (150 hp) 350Nm | 132 kW (180 hp) 400Nm | * | + 30 hp | 599€ |
| 2.0 Turbo | 147 kW (200 hp) | 180 kW (245 hp) + 55 Nm | * | + 45 hp | 599€ |
| 2.0 Turbo | 155 kW (211 hp) | 188 kW (256 hp) +60 Nm | * | + 45 hp | 599€ |
| 2.0 Turbo | 160 kW (218 hp) | 182 kW (248 hp) + 55 Nm | * | + 30 hp | 599€ |
| 2.0 WRX | 165 kW (224 hp) | 195 kW (265 hp) +60 Nm | * | + 41 hp | 599€ |
| 2.0 STI | 195 kW (265 hp) | 224 kW (305 hp) +60 Nm | * | + 40 hp | 599€ |
| 2.5 WRX STI | 206 kW (280 hp) | 235 kW (320 hp) +60 Nm | * | + 40 hp | 599€ |