Norlandt, my friend was having the same problems with his EVO. We took the car to CFT only to realize that is AEM logs for his IDC was 174% and he has 1000cc injectors. I noticed on the dyno at WOT that the fuel pressure was dropping from 65psi to 45psi doing WOT pulls. This was causing the car to go extremely lean up top. You are more then likely experiencing the same thing he is. He has since installed an inline walbro 255 pump and the problem seems to have gone away. I will find out more information and the next time you are at the brothers house, I will call him up and see what his situation is right now.