[Tcoat]

Originally Posted by Ohio Enthusiast

Isn't port injection only added at low and high RPM? Wouldn't then the bulk of operation be direct injection only? I remember seeing a graph detailing the breakdown between direct and port injection, but can't find it now...

Originally Posted by alex87f

I recall seeing that one too. Can't find it either.

IIRC, the car starts on port (maybe because the DI pump needs a moment to ramp up fuel pressure? It's mechanical, right?), and then always uses DI as soon as it becomes available. Port is only active as a complement below roughly 4 500rpm. Past that, it's DI only.

Some Ford engines are the opposite, using a majority of port with DI as a performance complement. Which allows them to idle on the quieter port system.

But as others pointed out, the FA20D's a fairly agricultural engine with a rather high degree of complexity (4 cams & 8 injectors on only 4 cylinders), plus the car lacks deadening and is running on a platform that wasn't created for luxury.

I *think* the EU cars are a little quieter due to a more restrictive rear muffler and more hood sound deadening, though I guess it mutes them more than it refines them.

Yep. And you can really easily hear when they kick in and out.