The G4+ KnockBlock is an essential tool for tuning and can aid in the early detection of incorrect ignition timing, lean air/fuel mixtures and mechanical issues. It is used it with ear buds, headphones or noise cancelling ear muffs and features special filtering to allow you to listen in and detect knock early. Listen to one or two knock sensors Special filtering design improves signal to noise ratio Can be used with ear-buds, headphones or noise cancelling ear muffs Long life lithium rechargeable battery Rugged CNC aluminium enclosure Flying lead headphones connector Can be used with all OEM knock sensors Can be used to interface directly to a laptop for recording of engine noise or knock sensor frequency analysis (using PCLink G4+) Please note headphones with their own noise filtering may be unsuitable for use with the knock block.What’s in the Box?G4+ KnockBlock2 sensor looms (attached)1 headphone loom (attached)Quick Start Guide1 USB cable mini2 Bosch type doughnut OEM knock sensors2 small Link Engine Management stickersSpecifications:OperatingInstall the knock sensor/s in a suitable location on the engine (typically on a solid mounting point on the block near the cylinder head)If only using one sensor, leave the unused sensor cable disconnectedTurn the volume control clockwise until it clicks. The LED indicator will turn blue when the KnockBlock is operatingTurn the volume to the minimum setting (most anti-clockwise)Connect headphones to the 3.5mm audio jackRun the engine and carefully increase the volume (clockwise) until engine mechanical noise can be heard. Adjust to a comfortable listening volumeChargingTurn off the KnockBlock by turning the volume control anti-clockwise until it clicksConnect the USB charging cable to the KnockBlock’s Mini USB connector. Can be charged from any standard USB charger PC, laptop, car or cell phone charger (2.1A at 5V max)The LED indicator will show red while charging. When the indicator turns off the battery is fully chargedCharge the G4+ KnockBlock after use and before storage
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