VK EFI's work beautifully when you replace 3 main drawbacks
1 Analog ECU, can't do much with them.
2 Vacuum advanced timing. Combine Injection & Ignition ECU such as delco will fix 1 and 2 and also 3 with good vacuum sensor.
3 Restrictive straw called air flow meter, the've got a good tuned manifold and factory extractors, BUT a crippled air flow because of that meter.
I dropped an AUTRONIC ecu onto a VK EFI motor, and it was like a new car full of life. Massive gain without touching the engine, except for sensors, dissy change and removing that air flow meter.
