That's why I'm going the Megasquirt engine management route:

ecu 200 euros
110ps efi head, inlet, fuel-rail, sensors, loom, edis... 120 euros
air-filter, tubing 50 euros
Cossie blue injectors 100 euros
head gasket+bolts 50 euros
knock sensor 30 euros

Thats about it: total 550 euros.

Fully mappable, datalog, lambda-correction, waisted spark, boost control...