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Tachometer Signal Filter
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 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. Some such systems include, but are not limited to the following:
- Single coil ignition systems
- Point style coil ignition systems
- Historic vehicles with vintage electrical systems and components
- Vehicles with weak, strained or stressed electrical systems
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 GlowShift Tachometer. The filter should be used when installing any GlowShift 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!
Product Reviews
| (2 Ratings, 2 Reviews) |
Average Rating:
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It Kinda Helped
Brandon
(Tn)
9/15/2011 2:04 PM
My needle use to bounce some ans read real high but after installing this it smoothed it out but when i touch the gas it jumps to about 8,000. I drive a 89 Chevy Silverado with a 350.
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Crazy needle! *-*
greg
(louisiana)
8/6/2011 1:04 AM
My readout on my tach was crazy, sometimes it would read right mainly if i went past 3000 rpm itd shoot up to around 7-11000 rpm (i have a factory tach to go by). If i cruise on the interestate doing 75-80mph itd read steady but a few hundred rpms lower than the factory then all of a suden shoot up to 8-10000 rpms for a second or so then go back steady and repeat. Got the filter installed it, fixed all the problems and reads like it should. P.s. its a 97 celica with fuel injection, i hooked it to distributor directly. Anyway thats it. Thanks guys!
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