User blog comment:ImperiexSeed/Some things on the Speed Force/@comment-7890302-20161129111754

My guess is, when in evil person has the Speedforce, it's akin to 'breaking in' as they found the secret to the Speedforce. To stop them, they can't grow in power, so they have to abuse it. Notice that every evil speedster grows in power through another way besides training. Eobard with tachyons, Zoom and Trajectory through artificial speed force, Rival with a boost from Alchemy, and Savitar in a way we will found out. Most likely, his armor is full of Speed force.