Sequoia's available new-generation all-alloy V8 engine gives you increased power and broader torque, which means more punch in the passing lane and less pinch at the pump. Dual independent Variable Valve Timing with intelligence (VVT-i) precisely controls and adjusts each intake and exhaust valve, depending on the need for power or highway economy. Stainless steel tubular exhaust headers improve power and efficiency while an electronic throttle control valve is much more precise and efficient than a cable.