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Rev counter help


clivecoupe
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I have redone the dash and gauges on my coupe using so gauges from EBay. It has all come out very well but I am unable to get the rev counter to work. I am running a DIS red top C20XE using the ECU out put. My original manta rev counter worked fine so know that side is fine. The seller says in need too set the pulse ratio per revolution. I have been unable to find this anywhere.  Can anyone help me out with this ratio?! 

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I have the pulse from the green wire. I need to know the amount off pulses it produces per revolution to set the calibration on the aftermarket rev counter unit. It must be the same amount of pulses as a CIH as it previously worked my manta rev counter. 

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I have just realised my stupidity. If the original manta rev counter signal comes from the coil it must be 2 pulses per revolution for 2 sparks per revolution. And if the rev counter worked correctly from the ECU out put it must be the same. IE 2 pulses per revolution! 

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2 hours ago, clivecoupe said:

I have just realised my stupidity. If the original manta rev counter signal comes from the coil it must be 2 pulses per revolution for 2 sparks per revolution. And if the rev counter worked correctly from the ECU out put it must be the same. IE 2 pulses per revolution! 

Does it not just gave the setting for 4cyl on the back? But yes it would 2 pulses as you say.

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