Hello new guy. Welcome to the boards.
Let me congratulate you on your purchase of a car that is at least 18 years old. Chances are it is going to act a lot like a car that is 18 years old. It's going to have many problems you cannot immediately see. As much as we would like to help you, the best course of action is going to be to take little tips from people on the forum here, apply that knowledge, and mix all of that in with a thorough personal understanding of the vehicle you have just purchased. These cars are not overly complex but even after 15 years of working on them even us old timers miss a thing or two, so don't be discouraged.
There is in fact a Documents section on the forum here although I forgot the link. I would suggest popping the hood and beginning the lengthy process of getting acquainted with your old car. Bring some of the books with you. Figure out what has been done to the car. If you post any questions, describe them in full, complete sentences so that us old guys don't get aggravated. Get the shop manual. Keep it simple.
There is a reason many of us own this particular car. It's not the aerodynamics. It's not necessarily even the styling. It is because we know. We know it's a passion. Unfortunately, if the passion doesn't hit you, you may very well be left with a sub par vehicle which doesn't give back what you expect from it.
A tip of the hat to doing it for the passion...
P.S. - Do what he said. And check you don't have a massive intake/IC pipe leak. And check the wastegate is connected to a boost source.
/brox