Combining MAP Sensor connections

[hstaton]

I have an all-electronic ignition, and both modules require a MAP sensor input. Rather than install two separate MAP sensors, the manufacturer tells me I can gang the two together. My question is this - can I gang the EFIS MAP sensor input together with the two ignition modules, so that I only have one sensor instead of two or three?

 

[mmarien]

Do you need sensors? or just a manifold pressure hose to the ignition module. The P-Mags just need a hose for manifold pressure. I built a header with a single hose from the manifold to the header and attached several devices that require manifold pressure to the header. Works good.