Anybody heard of this problem?

I have a 1990 super coupe.It has a COMPLETE Magnum Powers induction system,42#injectors,75mm Pro-M mafs,complete SCP exhaust from the manifolds back,190gph fuel pump,and an Apten chip.I've lost power for some reason.I have enough boost to bury the needle but the car doesn't seem to be dumping fuel or something to that effect.It runs fine occasionally the idle gets a little lopey but not enough to really see it on the tach.Any suggestions????It runs and drives but is very sluggish compared to how it used to be.Very dramatic loss of power.

Checked your plugs? While they are out do a compression test.