Naturally, the fuel-injected combination was run with Holley's new Dominator EFI system. The Holley Hi-Ram upper intake was designed to accept either a 92mm or massive 102mm throttle-body.

The first fuel injection test was a GM Tuned Port Injection (TPI) manifold typical of '85-'92 305s and 350s. The system was stock with the exception of a TPIS Airfoil.

Also, it virtually eliminates the possibility that fuel will condense or collect in the intake manifold. With TBI and carburetors, the intake manifold must be designed to conduct the engine’s ...

I understand the basics of fuel injection; my Ford F-150 EcoBoost, however, is direct injected. What's the difference? – Jim Traditional multiport fuel-injection systems use an in-tank pump to ...

By using individual fuel injectors for each cylinder and placing them just upstream of the intake port, PFI systems do not rely on the intake manifold for air/fuel mixing purposes, instead ...

Direct injection technology provides slightly more power and better fuel economy; depending on the application, it’s usually in the 10–15 per cent range of improvement. But engine torque ...