Originally Posted by
namedud
Those mods don't shorten the amount of time between ticks, they increase the amount of energy you get each tick. The only "mods" that shorten the time between ticks are the class bonuses for goodfella and whatever the other class is that speeds up energy (can never remember if it's agent or enforcer).
Get your stopwatch out and time your regen if you don't believe me. Hit start when you see the little green +x appear beneath your energy bar, and stop it when that green number appears again. Timer in game will count from 0:53 (or 0:59 depending on class) down to 0:00, giving you either 60 or 54 seconds per tick.