Originally Posted by mayonaise
i'm afraid not. when the amount of exhaust gas available is low (eg, low RPM/speed), the variable flow turbocharger increases the velocity of the exhaust gas into the turbo, and varies it progressively as more exhaust gas is available. the flow control valve is controlled by exhaust gas flow, not directly by RPMs. so no, it's not only on "when you gun it."
Yeah, but it aint doing jack when you're cruising. The bottom line is - Toyota Rav4 is bigger, lighter, more powerful, faster, and still gets better fueld economy.