"High end fade" as you call it is NOT a condition you want to
enter. What it really means is that your mixture runs really
lean with concommittant disaster.
I do not have any experience with the DGV's, so cannot offer any
help. However DCOEs appear to work best with 3-4 psi. Any higher
pressures will sink the float bowls with its ensuing problems.
Dont let the low pressure fool you though; do not skimp on spending
for a cheap pump and regulator; figure on spending at least $250-$350
in this area. If you keep to low revs or driving on/off the trailer
at car shows, the less expensive stuff will do.
Cheers,
Shane Ingate
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