Description
In the high-voltage environment of a race car, electrical “noise” is a constant threat to your data. High-output ignition systems, alternators, and coil packs generate Electromagnetic Interference (EMI) that can cause sensitive electronic gauges to malfunction. The Longacre 52-44410 AccuTech™ Tachometer Filter is the professional solution designed to “clean” the incoming signal for your high-speed Stepper Motor tachometer.
If your tachometer needle is “jumpy,” inconsistent, or showing erratic spikes that don’t match your engine’s actual RPM, you likely have a noisy ignition signal. This compact filter acts as an electronic gatekeeper, stripping away the interference and delivering a crystal-clear, steady pulse to the gauge. It is a mandatory addition for racers using high-energy ignitions (like MSD, Crane, or Mallory) who demand 100% accuracy from their AccuTech™ SMi series tachometers.
Key Features
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Advanced Signal Conditioning: Filters out “dirty” electrical pulses and high-frequency interference, ensuring a smooth and steady needle movement across the entire RPM range.
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Stepper Motor Optimized: Specifically engineered for the ultra-fast response times of Longacre AccuTech™ SMi (Stepper Motor Instrument) tachometers, preventing “needle chatter.”
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Eliminates Erratic Spikes: Solves the common problem of “false” RPM readings caused by high-output racing ignition systems and solid-core spark plug wires.
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Universal Inline Installation: Designed for a simple, “inline” installation between the ignition’s tach-output terminal and the tachometer’s signal wire.
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Rugged Racing Construction: Encased in a durable, heat-stabilized housing built to withstand the intense vibration and temperatures found behind a racing dashboard.
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