ECA memory problem, car missing above 3500

[Irish50]

Ok, here we go, ever since my powerdyne locked up my car hasn't been the same, after 3-4 K it starts studdering and my friend says it dosent sound like detonation. I have replaced the O2 sensors, plugs, wires. cap, rotor, and finaly the pickup in the distributor, I have also added 30# injectors and a new 75 MM mass air, Nothing has helped, recently i lost another powerdyne and upgraded to a powerdyne xb 1a and 1:7 roller rockers and the problem has become a little more noticeable.
Any Ideas??? could my computer be bad?

BTW the FMU is hooked up with the propper calibration.

 

[Irish50]

Oh BTW it scanner reads 511, eca memory fail.

 

[Irish50]

new problem, i pulled the super chips chip and tried to run the car, the 511 code went away but the car wont idle and drops down and dies w/o throtle?
Also the car's fuel pressure junps up to 45 psi? whats going on?