DR. Dolittle... It is like TQ1 said..
There are 4 (6 total) wires to hook to the injector system..
He does say HE only hooked TWO of the wires off TFI harness (4).. So !/2 a hookup won't work..
The TFI or Gen3 NEEDS ALL wires from it hooked up.
Quoted below
"the TFI has four plugs on the harness. I only need to use two of them correct?"
signed....BUBBIE