Quote:
Originally Posted by brillo
I thought the dual injectors were also to help keep the valves clean as well as for power and efficiency. Subi wants to dump the port injectors completely? Do the direct injectors have the volume capacity to feed the engine across the rev range?
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The valve deposit thing is simply a welcome side effect of the dual injection. The main value in dual injection is to help with some of the compromises you have to make when designing a direct injection combustion system. The port injectors are also much better for particular emissions, and particulate emissions standards are about to start tightening... you may be seeing particulate filters on gasoline engines in a few years.