This page documents ECU features to be utilised in the EJ25 N/A DOHC installation
| Feature | Hardware utilised | Software support |
| Sequential injection | 4 injector drivers | Yes |
| Wasted spark ignition | 4 ignition drivers | Yes |
| Stepper idle control | Stepper outputs | Yes |
| Fuel pump | Fuel pump relay output | Yes |
| MAP | Internal MAP sensor | Yes |
| LCD | 4x40 LCD output | Yes |
| Dual wideband lambda | WBO2 channels 1 and 2 | Partial (comparison and range testing should be done) |
| EGT | EGT sensor | Partial (is this used for more than display?) |
| Knock sensor | Knock channel | Partial (is this used for more than display?) |
| Cooling fans | 2 relay outputs | Partial (only 1 fan switch is supported) |
| Subaru crank trigger | VR 1 | No |
| Subaru cam sync | VR 2 | No |
| EGR | Misc driver 1 | No |
| Warning Lamp (CEL) | Misc driver 2 | No |