Ignition Timing
| Spark Control Computer | Basic timing |
| 4289813 | 7 Degrees Before Top Dead Center (deg BTDC) |
| 4289913 | 7 Degrees Before Top Dead Center (deg BTDC) |
| 4379228 | 16 Degrees Before Top Dead Center (deg BTDC) |
| 4379228 | 16 Degrees Before Top Dead Center (deg BTDC) |