WRX STI: Engine
| Engine type | Horizontally opposed, liquid cooled, 4-cylinder, 4-stroke gasoline engine | |
|---|---|---|
| Valve arrangement | DOHC | |
| Bore x stroke | mm (in) | 99.5 x 79.0 (3.92 x 3.11) |
| Displacement | cm3 (cu in) | 2, 457 (149.94) |
| Compression ratio | 8.2 | |
| Ignition order | 1 - 3 - 2 - 4 | |
| Idle speed | rpm | 700±100 |
| Maximum output | kW (HP)/rpm | 227 (305)/6, 000 |
| Maximum torque | N.m (kgf-m, ft-lb)/rpm | 393 (40.2, 290)/4, 000 |