Well, with all the info that keeps adding in here the more I want to say you have injector issues. I see in your sig you have a new turbo, do you have aboost gauge? If so are you getting good boost? I know its hard to get boost without proper fueling.... can you hear the turbo spool? I dunno, I keep falling back to you having injector problems. Consider calling Ryan Bean and talking with him in person, explain your problems and see if he can help diagnose your problems.