At 50 PSI the higher fuel pressure passing through the injector orifice
atomizes into smaller droplet sizes.  Having a smaller droplet means
that more droplets are present, and the combined total surface area of
fuel is greater.  It's held that combustion is more efficient as more
fuel surface area is exposed.

I feel the van is smoother and more responsive at off idle
acceleration.  The van also has more pulling strength in the 3200 RPM
range.  I say this because My vacuum gauge before the conversion would
indicate a couple of inches lower when climbing the hill near our home,
to maintain highway speed.

Sincerely,

Mark Keller
91 Carat