1. After the CDI is powered on, the digital display shows the ignition curve selected before the last shutdown. 2. Pressing the button cycles through ignition curves 0–9. Curve 0 disables ignition (speed-limited to 6000 RPM). Curve 1 corresponds to the stock ignition timing. Curves 1–9 offer adjustable, unrestricted ignition timing optimized for motorcycle engine performance. 3. The selected ignition curve is retained in memory and remains displayed after power-off. 4. Ignition curve 1 provides a relatively conservative ignition advance angle; curve 9 provides the highest ignition advance angle. Each incremental curve adjusts the ignition timing by approximately 1–2 degrees. 5. Select the appropriate ignition curve based on riding conditions, track type, or terrain requirements. Type: Motorcycle Digital Adjustable CDI Ignition Box Condition: New Features: 9-segment digital display, 4-pin connector Compatibility: 50cc–160cc ATVs, quads, pit bikes, dirt bikes, and motorcycles Color: Blue & Black Material: Metal + Plastic Package Contents: 1 × Motorcycle Digital CDI Ignition Box Note: Color may vary slightly due to screen settings and lighting conditions. Dimensions may vary by ±1–3 cm.