F.I. Tech or Holley sniper. Opinions from users.

Cal Tonsley said

If you need a manifold and distributor anyway there is really no cost penalty in purchasing the Pro Flo 4 and the benefits are many - port injection, o.e. quality components, remote blue tooth tablet, dashboard control, an ECU that can be mounted well clear of engine heat and more!

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Good points on the distributor/manifold, and there really isn't anything I don't like about the PF4. I'm still really curious about the differences from a technical point. The port injection should give more power and fuel economy, or the OEMs wouldn't be using it on every car they build. But how much better is it? Does it get even better with an intake specifically designed for port injection instead of a carb?