Maintenance needs vary with different uses and driving conditions. See the Owner's Manual for details . By opening and closing a trio of valves in various combinations, the oncoming rush of air takes a shorter, or longer, path through the intake tubing, creating shorter or longer pulses of air. This also synchronizes the air's arrival to the opening of the intake valves. The flow of air is smoothed out, and more air is packed into each ignition cycle.
More air means more power.
Deeper within Catera are sodium powder-filled exhaust valves borrowed from the racing world. These help dissipate heat from the combustion chamber. Power that Catera can handle with ease. Back to top Automatic Transmission Everybody wants to drive a car that performs with intelligent authority. You get seamless shifts and outstanding performance.