Um, yeah... like the title says, can it?

look in the pac if its not in thier look in the faqs

Psychic Blast has you make a ranged combat attack, and Enhancement boosts ranged combat attacks. Match made in heaven.

According to the PAC:
Psychic Blast: (optional) Give this character a ranged combat action.

Enhancement: (optional) At anytime, as a free action, this character may increase by 1 the damage dealt by a ranged combat attack... "

So, I asume "yes" is the answer... I'd just like to know I'm not missing anything on this one.

Thanks, HeroComplex... I don't know why I never thought of it before...