Provides a stable reliable signal to the Tachometer for better Tachometer response and performance. Provides protection and superior response.
Tachometer Signal Filter removes ignition spikes, voltage surges, electrical noise, causes by High Energy Ignition systems, and some after market ignition modules.
Compatible as an OEM replacement Tachometer filter for GM vehicles. Compatible with aftermarket ignitions systems such as MSD, Holley, Speedmaster.
Compatible with Tachometers that are circuit board driven (usually that would be 1975-1990 GM vehicles). Not compatible with Tachometers that are simply a coil.
Erratic and non-functioning tachometers can be caused by a faulty tachometer signal filter.
Complete instructions make for fast and easy fool-proof installation.
See our Blog post: How a signal filter may help your Tachometer read properly