[nimblemotors]

I'm building the exahust header for my MGeo with G10 3-cyl,
and wondering what to do about the EGR.

The stock manifold has a little port on one cylinder that runs into a crossover passage through the head to the other side that connects to the EGR valve.

I'm wondering if this is the best way to do this for maximum MPG.
A few issues come to mind.

The EGR comes from one cylinder, I'd think it work better if it came from all 3, so the scavenging effect is equalized.

Isn't the EGR working against the intake manifold pressure, and would be better positioned as a "ram" effect.

The EGR passes through the head, would it be better to bypass this heating of the head at this spot from one cylinder?

Is it best to have the EGR gasses cooler, and thus source them much farther down the exhaust where it has a chance to cool down?

And also, I believe the EGR valve is controlled as an analog vaccuum signal, could I make it a manual switch, or perhaps eliminate the EGR valve alltogether, and have it always on, and just have less power.