For a bit more detail:
A low impedance, peak & hold injector, usually requires its own driver. A high impedance, saturated type can run several injectors per driver. The Syty ECM, being batch fire, runs all 6 off of one driver, even though 2 are present in the ECM. If you want to run 55# or larger, you need to install peak & hold type injector drivers.
Almost all the aftermarket EFI computers I know run peak & hold drivers. You can run a high impedance injector in a peak & hold configuration, but you CANNOT run a peak & hold, low impedance injector in a saturated/high impedance setup. It will burn out the driver.
Brian G