Some new testing video released the other day.
Current power stats are stated as...
"3.5L Tacoma Base Kit performance :
Torque increase over stock: 145-150%% (340~350 ft lbs)
Horsepower increase over stock: 120-125% (320-325HP)
Peak boost psi : 6.5 psi
3.5L PowerMax Twin Turbo kit Low boost:
Torque increase over stock (160-180%) As Tested ~ 400 ft lbs 2300 rpm
Horsepower increase over stock (150 - 160%) As Tested ~ 375 HP at 5200 rpm
Peak boost pressure 9.5 psi (stable, 2000 to 6000 rpm)
3.5L PowerMax Twin Turbo High Boost :
As tested : 520 ft lbs @ 2500 rpm
As tested : 464HP @ 5600 RPM
Peak boost pressure 21.5 psi ~ 17.5 @ 6000"
Original link: https://youtu.be/L7ZFc_6CTGE