FiTech EFI system

Mopar control box is eliminated entierly, and the unit controls timing by itself.. Same principal as wiring in an aftermarket ignition box. Distributor needs locked out to work with the fitech.

Will the Mopar lean burn distributor work with this? It's locked out and has has the rotor phased to be controlled by the original Mopar computer?

Yes it will, your making a regular dizzy do the same thing as a lean burn by locking it out, ie no mechanical advance

If the mechanical is locked either on a regular or a lean burn distributor, can vacuum advance still be used?