im not a fan of the pt88 by any means, but i doubt youre just going to go throw a new turbo on it so ill just leave that alone.
but essentially, IMO, your problem is that its jsut not making the power and torque to make you leave hard. so like Devin said, just crank up the boost off the line (how you go about doing that is another topic) and itll run like you want it to
no reason you shouldnt be leaving on 10+ psi with it ramping in to whatever your max boost is almost instantly (within a second or so)