Hi, starting to gather info on a project I would like to complete this fall season.
I have a 2000 Bayliner Capri bowrider, it has the same year 3.0l mercruiser 4 cylinder. basically it is a stroked version of the 2.5l iron duke engine.
I would like to build a TBI system for it that would be as close as possible to Coast Guard Specs.

This engine already has the GM small cap EST distributor, one less thing to source.
I would like to find an under hood style ECM that will suit the requirements of my small displacement engine with a small cfm throttle body.
Also closed loop would be a plus, I have a good idea of where to mount the HO2 sensor so this should be possible.
So, This will be my first home made system.
Can't wait to get started. Thanks