As titled when I hold at WOT power surges in and out. Very noticable, just started this recently. My fuel filter needs changing which is my first suspect. any other ideas? could it be an injector problem? Changing filter today hoping thats all it is. THanks.

 

check your wastegate line, could have a leak or crack in it.

 

Found the problem loose connection on my solenoid for the valet switch. Now that I know it, that's exactly what it felt like