I am looking at replacing the whole top part of my engine

P&P Y8 Cylinder head ( Stock cam)
Port matched Y8 Intake manifold
GSR 60 mm Throttle body

Already have

DC Header
Intake
Adjustable Cam gear
Exhuast

What will I need for ECU upgrades? I need to control my fuel .. somone said my ingnition as well .. but I dont' understand that part.

HElp me out please.

 

you can get a fuel pressure regulator. but as far as a engine management system those are like 1000+ or you could get a s200 for like hmmm 350 maybe 400, but then youll need to have someone tune it thats like another 200+