GO_BLUE_VETTES

2001 Z06, C5 stock PCM.

I have completely removed the IPC. I am attempting to connect the RPM sense line of the AIM MXG to the RPM (engine speed) output of the PCM. Specifically, from the PCM pin #10 on connector C2, white wire, that would normally connect to the iPC a pin A17.

Anybody with experience doing this?

GO_BLUE_VETTES

I did figure out the solution last night. Pull-up resistor, I used 1K and wired it in like this diagram.

Hi Volts Z06

I don't think you need the pull up resistor. You are using the pulse generated to trigger the unit. It shouldn't hurt but the important thing is setting the tach signal for 4 cylinder.

GO_BLUE_VETTES

Pull-up resistor was absolutely necessary. I couldn't make it work until I added it.