KnockLink - Self-Calibrating Knock Warning System KnockLink is a self-calibrating, visual knock warning tool designed for tuning, street use, and racing. The system requires a knock sensor to function (sold separately), or you can purchase the KnockLink Kit, which includes the sensor and wiring harness. Unique Advantages: The G4 KnockLink is the only knock warning system on the market that requires no adjustments. No adjustments for gain, frequency, or noise are necessary, unlike other systems. Easy installationplug in and start the engine. Even light knocking can damage an engine over time. The G4 KnockLink uses a microprocessor that continuously analyzes the knock signal and warns of detonation. The system automatically profiles the engines RPM and load in a 3D map, which is dynamically updated to listen for specific knock frequencies. Operating Modes (LED Color): Dim Blue: KnockLink is powered on and waiting for the engine to start. Blinking Blue: KnockLink has detected the engi