MIRI/MRS known exoplanets detection yields with molecular mapping. Yields were estimated by applying the FastCurves S/N calculation (i.e., Fig. 19) to each of the 5600 planets in the Planetary Systems and Planetary Systems Composite Parameters Table from the NASA exoplanet archive (Akeson et al. 2013). A planet is considered detected when the S/N on one of the MIRI/MRS bands is greater than 5 for the exposure time considered. It can be observed that PCA would allow MIRI/MRS to approach the performance levels it could achieve without systematics, though not fully reach them, due to the signal loss caused by the subtraction of the principal components.