clivecoupe Posted February 13, 2022 Share Posted February 13, 2022 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?! Quote Link to comment Share on other sites More sharing options...
Jessopia74 Posted February 13, 2022 Share Posted February 13, 2022 Should be green wire out of ecu and us already correct pulse Quote Link to comment Share on other sites More sharing options...
clivecoupe Posted February 13, 2022 Author Share Posted February 13, 2022 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. Quote Link to comment Share on other sites More sharing options...
clivecoupe Posted February 13, 2022 Author Share Posted February 13, 2022 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! Quote Link to comment Share on other sites More sharing options...
Jessopia74 Posted February 13, 2022 Share Posted February 13, 2022 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. Quote Link to comment Share on other sites More sharing options...
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