Fast 30400-KIT-EZ-EF, Инструкция по эксплуатации

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6. When your entire installation is finished, be sure to install an air cleaner onto your throttle body
(using the stud from the carburetor that you removed.) Standard carburetor-style air cleaners fit
the EZ-EFI
®
throttle body or check out FAST™ PN 30420 for the matching air cleaner to your
EZ-EFI
®
throttle body.
Fuel System Types
If you have not already done so, you must now choose the type of fuel system you will run. For the
most reliable and best performing system, FAST™ engineers recommend an in-tank mounted pump
running a “return-style” flow.
Return vs. Returnless:
“Return-style” systems constantly pump fuel in a circuit starting at the tank, running up to the engine
and then any excess fuel is returned to the tank. Fuel pressure is controlled with a mechanical pressure
regulator in this style system. Return-style systems are the most consistent in terms of fuel pressure
and fuel flow, which adds to the stability of the EFI system. Return-style systems also help to keep the
fuel cooler by circulating it out of the hot engine bay and by constantly cooling the fuel pump. This
helps prevent a condition known as vapor lock where the fuel boils and disrupts the running engine.
“Returnless-style” systems pump fuel from the tank to the engine, but do not return fuel to the tank.
The EZ-EFI
®
ECU controls fuel pressure in this scenario by varying the speed of the pump. These
systems may be more convenient if there is a shortage of available inlets/vents to the fuel tank and one
is not easily added. It also prevents the need to run a second fuel line down the length of the car.
NOTE: Returnless-style fuel systems require the use of the in-tank pump included with PN 30401-
KIT. They also require a solid state fuel pump relay as used in the EZ-EFI
®
fuel pump relay harness
that is included with PN 30401-KIT. (That relay / harness is compatible with both return and
returnless-style fuel systems and is included with PN 30402-KIT as well.)
1/8" Ported Vacuum
Manifold Vacuum
1x 1/8" (labeled A)
2x 3/8" (labeled B&C)