By analyzing earthquake catalogs, it has been reported that some changes were noted in earthquakes' distribution both spatial and temporal before and after a great-magnitude earthquake in the Mexican Pacific Coast. In a previous work (Entropy 2018, 20, 961), we performed a statistical analysis of a Mw = 8.2 earthquake (EQ) that took place on September 7, 2017 in Mexico. We presented the concept of pseudo-velocity as the ratio between the distance and the time of consecutive earthqueakes. We measured the inter-event time and distance between successive events for a period of 19 years in the circular vicinity of the earthqueake of magnitude 8.2. The main result was that the multifractality degree of the pseudo-velocities series exhibits noticeable changes before the Mw = 8.2 earthquake. On the other hand, the Olami, Feder and Christensen (OFC) model has been applied to obtain catalogs of synthetic earthquakes and by analyzing them, many properties of real seismicity have been qualitatively reproduced. In this work, catalogs of synthetic earthquakes with one hundred million events were obtained, for each event its magnitude, the coordinates of its epicenter, the duration time and the time that elapses between each synthetic earthquake are known, in such a way that it is possible to evaluate the pseudo-velocities. In the synthetic seismicity catalog, the largest magnitude events were identified, and exploration circles were defined around each of them. Sliding windows were defined before and after such large magnitude earthquakes and in each of these windows the multifractal spectrum was evaluated and three important parameters were calculated: the width of the spectrum or multifractality degree, the symmetry of the spectrum and the curvature around the maximum. The objective is to analyze the variations of such parameters before and after the great synthetic earthquakes. Unfortunately, the significant changes that were expected as in the real seismicity were not observed. This is probably because according to many authors this model cannot produce aftershocks. We discuss some proposed modifications of the OFC model that could possibly produce aftershocks. [ABSTRACT FROM AUTHOR]