- Joined Apr 30, 2020
Hi I'm at the end of the ropes here. I am not an engineer I am a race car mechanic. I am currently trying to get a stand alone fuel ignition system working on a customers 79 Bentley. The ECU needs a rpm trigger it can use either a mag trigger or Hal effect. I didn't really have an option for either but I was able to retrofit the distributor with a mag trigger. Issue is I can't get a clean enough trigger above 2500 rpm. The ECU takes the sine wave input and converts it to a digital square wave and doesn't have many options as far as adjustment. I can set a low or high filter and a minimum voltage. Low filter create erratic issues at even idle. Setting minimum voltage above .45 does not allow the vehicle to start. I have tried new pickups new wiring twisted the wiring and shielded it along with disconnecting various electronic components that may be changing my trigger. I really need a way to either clean up my signal or convert it first to a clean digital signal. I know both can be done but it is very much out of my scope of knowledge. I'd greatly appreciate any help.