What if you want to build your very own EFI small block or big block engine from scratch, and you can’t find a fuel injected intake manifold to suit your needs?  FAST™ has the components to adapt nearly any engine to state-of-the-art multi-port fuel injection using the XFI™ ECU, one of our 4150 or Dominator style 4-barrel throttle bodies, and our weld/epoxy-in fuel injector bungs and universal fuel rails. Simply modify your existing intake manifold to fit the injector bungs, machine the appropriate length fuel rails to fit the injector pattern, and you’re in business. With these top quality universal EFI components, the possibilities are nearly limitless.

Tech tip: a direct port, electronic fuel injection (EFI) system such as the FAST™ XFI™ system won’t run with your old, carbureted fuel pump. An EFI setup requires at least 40-45 psi of fuel pressure -fuel pumps intended for carbureted use rarely exceed 10psi. Click here to check out our line of top-quality EFI fuel pumps and components!