If Rated Boost is selected but the R.P.M. is less than rated, what will be the effect on the Full Throttle Height?

When Rated Boost is selected but the engine's R.P.M. (Revolutions Per Minute) is less than the rated level, it affects the air-fuel mixture and overall performance of the engine. The Full Throttle Height refers to the operational altitude at which the engine can maintain its rated power output effectively.

At lower R.P.M.s, the engine does not produce the expected increase in pressure or airflow, which is crucial for achieving optimal performance. This lack of pressure can directly lead to a reduction in the engine's ability to maintain power output at higher altitudes, thereby resulting in a lower Full Throttle Height.

In essence, since the engine cannot reach its full potential due to the reduced R.P.M., it cannot effectively maintain the boosted performance expected at higher altitudes, leading to a diminished Full Throttle Height. This relationship highlights the need for both proper boost and operating R.P.M. to achieve the intended performance characteristics of the engine.