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Originally Posted by BEI
I guess direct fuel injection(DFI) will definitely help, like IS350 306hp 3.5v6, LS 380hp 4.6v8. Correct me if I am wrong, seems now only VW and Toyota are using DFIs. Maybe still cost a little bit plus non DFI engines still over or matching competitors, so Toyota just use DFI in Lexus engines. I guess next generation Toyota will all get DFI engines.
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A lot of companies use direct injection in gasoline engines. Mazda is in the MS6, VW/Audi are, and Isuzu has for years (SUV V6's). Tons more companies do also, but those cars don't always make it to US shores. Nissan has had direct injection variants of the VQ V6 since the late-90's or so, but they've been JDM market only.
Direct injection will definitely be finding its way into more and more engines, but newer technology is always more expensive than older, so yeah it might only be used in higher-tier cars first and then trickle down later depending on what the individual company's strategy is.
