FAST EZ-EFI Marine Base Kit w/ Mercury Marine O2

DescriptionFAST EFI systems are ready to take to the sea with the self-tuning EZ-EFI Marine kit that features the proven performance and reliability that comes standard in all FAST EZ-EFI systems. The marine system upgrades the poor cold starting and rough idle often associated with boat engines running a carburetor, while improving overall performance and drivability.?