| If you have | You will need (best) | You can use (alternate) |
|---|---|---|
| 1G DSM (1990) | 1990 DSM ECU | |
| 1G DSM (1991-1994) | 1991-1994 DSM ECU | 1990 DSM ECU (with ECU pin swap) |
| 2G DSM (1995-1996) | 1995-1996 DSM ECU | 1997 DSM ECU (with possible plug wire swap) |
| 2G DSM (1997) | 1997 DSM ECU | 1995-1996 DSM ECU (with plug wire swap) |
| 2G DSM (1998-1999) | 1997 DSM ECU | 1995-1996 DSM ECU (with plug wire swap) |
| EVO1-3 (1992-1995) | Your stock ECU is fine | |
| Lancer GSR (1992-1995) | Your stock ECU is fine | |
| RVR Van (1992-1995) | Your stock ECU is fine |