EFI System - 5.7L Vortec Engine (#57EFIKIT)

1000 cfm MPFI Vortec Marine System

Fits: 1996 and up GM 5.0 and 5.7L Vortec engines. Distributor is not included by can typically be reused.

Marine Fuel Injection Systems are now available. We have received many e-mails asking about marine application fuel injection systems. 

A kit was installed on a 98 Four Winns equipped with a 350 SBC Chevy engine. It was rated at 215 hp but is definitely providing much more than that now. Before the conversion we would occasionally foul out plugs trolling, idling around when water skiing and using a lot of gas. Prior to the conversion with the power prop that we have on it, it would take about 3/4 throttle to run 3200 RPM's and the top engine speed was 4000 RPM's.

Now we use 1/3 throttle for 3200 RPM's and the engine barely appears to be working. Top speed of the engine is 4600 RPM's and running strong. A strong start up with no stalls or restarts and no fouled spark plugs.  It also uses 1/3 less fuel than it did before the conversion. We will build this system to run either Regular or Premium fuel.

Here is what your marine MPFI system will include:

• Multi-port intake manifold and throttle body unit, includes TPS and IAC control
• Fuel rails, fuel pressure regulator and fuel injectors matched for your particular application
• Tach filter, for electronic ignition systems, EFI distributors available for some applications
• ECM (production GM unit must be in waterproof area or container, optional weatherproof ECM available)
• Custom built wiring harness for your boat.
• External Fuel pump (manufacturers life time warranty) with relay and filter.
• ECT, ACT and MAP sensors.
• Check engine light.
• Installation instructions.
• Warranty all components for one year.
• Tech Support.
• Many hours of low maintenance fuel injection operation.

Installation Instructions