CRJ200s do NOT have FADECS. The engines are hydromechanically controlled and it is very possible to cause engine damage if you simply push the throttles as far forward as they will go. The maximum thrust rating for a given condition is set by moving the throttles to achieve a specific N1 value, which usually does not correspond to maximum throttle travel. At any point beyond that, you're exceeding the cleared engine operating envelope, and introducing a risk of engine damage of various degrees.