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A tachometer filter transforms poor, weak or disordered pulse signals and corrects them by stripping out leading or trailing pulse signal interference.
This interference often confuses aftermarket instruments and causes them to act defective or erratic. After the signal has been filtered and rectified, it is then conditioned before it exits the end of the filter circuit to the new output.
A multitude of other applications may exist where an RPM signal needs to be corrected before it is fed to an aftermarket instrument such as a MaxTow Tachometer Gauge. The filter should be used when installing any Tachometer Gauge, Digital Tachometers with Shift Lights or a Programmable Barrel Shift Light device. If you experience issues or inaccuracies with your instruments this is more than likely the solution you have been looking for!
A tach filter may be necessary when any device utilizes a vehicle’s engine RPM pulse signal that is of less than optimal quality for instrument analysis. Such systems include, but are not limited to the following: