Quick Fuel Technology Qfi Electronic Fuel Injection System - Manual (Page 11)

11
o Install the high pressure EFI fuel filter (10 micron rating) on the outlet side of the electric fuel
pump (REQUIRED)
 This filter MUST BE rated for an electronic fuel injection system
 Use blue thread locker sealer (Loctite 242 or equivalent) on the filter fittings threads. No
Teflon tape or pipe dope!

Attach fuel line to the chassis
o DO NOT USE OLD FUEL LINE
o Use 3/8 in. high pressure rated neoprene fuel line or 3/8 in. braided steel fuel line (Do not use
solid line)
o Be certain to keep line away from heat source (or shielded if not possible), and fasten securely
to chassis.
o Line should be routed very near the floor pan, and must not be below the lowest level of the
chassis or frame.

Install the pressure regulator to the chassis --
the fire wall or inner fender are suggested
locations
o A pressure regulator must be used to
maintain the correct fuel pressure to the
fuel injectors
o A fuel pressure regulator is included with
the QFT 500 System Master Kit

Install line from throttle body to regulator
o The installation of the fuel delivery system
to the throttle body is very similar to
installing to a fuel log to a modular
carburetor (Quick Fuel Technology, Holley
or Demon). As noted earlier, the regulator can be located ahead of, or behind, the throttle
body's fuel log.
o The fuel enters the throttle body’s fuel log, is distributed to the injectors and excess fuel goes
into the fuel regulator, and is returned to the fuel tank.

A fuel pressure gauge is a supplied as a part of the QFT 500 System Master Kit assembly to help you
monitor the fuel pressure

Install the return fuel line from the fuel tank to the bottom port of the regulator
o It is highly recommended to use a 3/8 in. fuel line
This completes Phase I of the installation