earths all good?
one to head
one to block
one to body
2 from efi harness to engine
no one ever lost a race from having too many earths
do you have dropping resistors wired in, got continuity?
if they are unplugged you will have no +12v at injector
+12v is from relay to dropping resistor to injector
earth circuit is direct from injector to ecu to earth
no point buying a microtech if it is a wiring issue.
diagnose first its cheaper. prove the ecu is bad first
dazza