Install Bolt On Fuel Injection Pressure Lines.JPG
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27 Here are fuel pressure and return lines at the back of the Holley Avenger EFI throttle body. The large 3⁄8-inch line is pressure while the smaller 5⁄16-inch line is return to tank. You can hard or flex line these connections. The return line must be a minimum of 5⁄16-inch and no more than 3 psi fuel pressure. View Related Article
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