Recently just today, the engine sounds like it's running super hard.

What is your question?

Normally, the car runs perfectly with the engine, but before hand, when we got the car a couple of months ago, it came with a bad master brake cylinder and that needed to be replaced, after it was, the shifting was very late at times and we had to use the paddle gears. My question is, could the late shifting and engine running hard be connected? Or are they both separate problems? And how could you fix them?