How to parrellel plumb crossfire TBI's?

[nelson84]

How would I go about this and with the addition of 454 truck injectors, what performance difference would it make?

 

[elkabong]

You actually regulate the return side (pic below). Adding 454 injectors is only good if you have made modifications to the motor and are running larger TBs. These are 2.00" TBs sitting on top of a moderate 383.