The “Closed Loop Manifold Pressure Expected” table is an auxiliary table designed to enhance control strategies when using wastegate pressure control, also known as CO2 boost control.

In the video above, we demonstrate how to set up CO2 boost control using wastegate pressure as the controlled parameter. This method is straightforward and easy to tune but may be confusing for the end user or driver at the track, as wastegate pressure numbers do not directly correlate to the desired boost or manifold pressure. This is where the “Closed Loop Manifold Pressure Expected” table becomes useful; it allows wastegate pressure and manifold pressure to be mapped, eliminating the need to remember the exact correlation.

To use this table, the car must first be tuned as shown in the video. Once the boost control system reliably targets different wastegate pressures, the tuner should perform multiple runs at various wastegate pressures to establish a correlation between wastegate pressure and manifold pressure. The example table below illustrates what wastegate versus manifold pressure look like in our car.