Jesus, you need to learn how to diagnose a car, if you are going to be in this game, you better learn.
Sounds like you have a bad map sensor, possible ignition problem.
CHECK THE GOD DA.MN CHECK ENGINE LIGHT CODES FOR THE LOVE OF GOD.
REPLACE THE SPARK PLUGS.
EVERYTHING YOU ARE TALKING ABOUT DOESNT POINT TO A BLOWN ENGINE. IT POINTS TO A TUNE UP, SENSOR PROBLEM.
They make cars for people like you, they are called KIAs
