| 41. | All versions feature gasoline direct injection and continuously variable valve timing on both intake and exhaust side.
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| 42. | And thanks partly to electronic control of the valve timing, it accomplishes all this smoothly and quietly.
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| 43. | This was combined with variable valve timing and electronic fuel injection to give a power output of.
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| 44. | The VTEC system provides the engine with valve timing optimized for both low and high RPM operations.
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| 45. | It, too, has continuously variable valve timing and gets an overall economy rating of about 25 mph.
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| 46. | For improved responsiveness on cold starts, VarioCam Plus raises the amount of lift and retards valve timing.
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| 47. | It is achieved by a combination of head / port configuration, and cam profile / valve timing.
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| 48. | What it does is change the valve timing and lift by making small adjustments to the dual-overhead-cam system.
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| 49. | It's still a DOHC, 24-valve engine, but it now has high-pressure, variable valve timing and six individual throttles.
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| 50. | Variable valve timing was added to make the V-8 more responsive across a wider range of engine speeds.
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