no low end but lots of high end

[mx3autozam]

You seem to be pointing out TPS the most. That can cause issues, but his is correct,. he knows how to adjust it. Not by triggering the fan, that way is not acurate very much. He uses a volt mter and checks continuity. The cutting out aroudn corners is his fuel pump and its even worse it doesn';t flow at all now. He has a new one he is putting on today.

His regulator may be bad. one thing I think is all his CEL codes. especially knock and coolant sensors. get them cleared up and then try a correct ECU.