The turbine blades of the turbocharger do not have sufficient strength, and therefore, if the vehicle is suddenly accelerated many times while the turbocharger is operating at the maximum revolutions, the turbine blades may resonate and be damaged. If this problem is left unattended, the engine power may decrease and/or abnormal noise may be heard, and in the worst case, the turbine shaft could break, producing white smoke, and this could adversely affect other traffic.