a teenager who received a life-saving heart transplant two years ago after initially being denied because of his bad behavior has died following a high-speed car chase with police .
his death comes less than two years after he was given a second chance at life following a heart transplant at children 's healthcare of atlanta .
the boy , from decatur , suffered from a dilated cardiomyopathy so his heart was unable to pump enough blood .
the condition can lead to irregular heartbeats , blood clots or heart failure .