i have a powerdyne on a 4.6.i had my superchip reburned for all my mods.i had the rev limter moved to 6200 from 5500.at 5200 rpm i had 6 psi,now at 6000 rpm i have 7 psi.with more rpm i had it gave up somemore power.with the eaton you have full boost at 1800 rpm or so.if you move your rev limter higher you my not gain any psi.but you never know.well i has just wondering if anyone had a reburn to move the rev higher a got more psi.