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2001 Edelbrock Corporation
Brochure No. 63-0020
©
Rev. 10/01
Page 13 of 27
2.8 EFI Vacuum “Tee” Installation
1. Install the .042 jet into the EFI Vacuum “Tee”
and tighten the fitting securely.
2. Remove vacuum line from the vehicle’s fuel
pressure regulator.
3. Install vacuum line from the vehicle’s fuel
pressure regulator onto the center barb fitting of
the EFI Vacuum “Tee”.
4. Measure the correct length of vacuum line from
the barb on the Fuel Pressure Regulator to one
port of the EFI Vacuum “Tee”. Cut vacuum line
and install.
5. Measure the correct length of vacuum line from
the barb of the nitrous pressure regulator to the
remaining open port on the EFI Vacuum “Tee”.
Cut the vacuum line and install.
Note: On some vehicles, there is no test port fitting, or the location of the test port fitting does not allow
ample room for the fuel pressure safety switch to be mounted. These applications will require a “Banjo
nut” at the fuel filter to be drilled and tapped (1/16 NPT tap supplied with the system) to allow mounting
of the fuel pressure safety switch.
2.9 Fuel Pressure Safety Switch Installation
1. Locate the fuel rail test port fitting.
2. Make sure the vehicle’s engine is cool,
release pressure in the fuel system by
pressing down on the valve in the center of
the fitting. This will allow the pressure to
escape as well as some fuel.
3. After relieving all pressure, remove test port
fitting core and install the 1/16 NPT male x
1/8 NPT female brass fitting in it’s place,
using liquid Teflon paste.
4. Using liquid Teflon paste, install Fuel
Pressure Safety Switch into the 1/16 NPT
male x 1/8 NPT female brass adapter.