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TODA Individual Throttle Bodies greatly improve engine response and power output through the use of one throttle body per cylinder. Throttle Response is improved due to the reduction in volume of air within the intake manifold. By elimintaing "pumping loss", throttle response is greatly improved. Each cylinder receives a fuller charge of air/fuel especially at low to mid engine speeds. This is due to the independent throttlebodies and more effective injector positioning.
Improved induction efficiency supplies the engine with the correct quantities of air/fuel on demand. 1. Equal length intake runners.. 2. Straight induction ports. 3. Individual throttle bodies are individually smaller in volume, but collectively larger in volume. This allows for both low-end torque, and high-end power. 4. Airflow bench tested trumpet.
But keep in mind though tuning ITBs properly needs a stand-alone ECU and a tuner who understands how to use TPS sensor data instead of MAP sensor data.
There's also a need to filter out the velocity stacks by means of a foam filter or a custom air box and long cold-air tube and filter arrangement to draw in cold air. Remember the engine bay with the oem hood traps in a lot of heat.