Hello Paul,
I have asked some questions of these people and i hope they come back
with the right answers.
http://www.nolimitmotorsport.com/ctgy/AEM-CDI/prod/30-2821

I just don't like high pressure fuel and the
EFI systems for the following reasons. After having a fire in flight recently
and the total loss of the plane I am more aware as I was lucky to get
it on the ground. Through the fire and getting the plane on the ground

I knew it was not a fuel fire and I remember thinking if the fuel
system catches fire I am dead. If my system had of been high pressure
fuel system the lines would have burst with the heat and I would not be here now.
The fire was oil that ignited on the exhaust. As my fuel system was
gravity fed there was no fuel fire. The fire went out when i put it in
a dive to get it down on the airstrip. On landing the nomex and epoxy
in the cowl and fire wall which was s/s covered ignited again and it
was uncontrollable from then on. A totally destroyed plane.