EJ swap in GL10, rough running

[Turbone]

I did a EJ22 (complete engine rebuild) swap on a friends 87 GL10 and the things been giving us grief. Its running real rich and dumping fuel and fouling the plugs. I've checked fuel pressure, its good. Comp on all cylinders is over 200 (rings have extra gap for NA/T in the near future. Its also hard to start and runs rough for several seconds, then smooths out. Has a little bit of a surge too. Non EGR and have replaced the fuel reg. Looking for a little guidance on where to look next, should I start going thru the wiring harness next?