I cannot figure this out

[smoothtransit]

I purchased my car approximately 7 months ago with 48k miles. From the get go ive always felt like the car was quick, yet it felt so much slower than the specs of the car. i figured that it was just in my head and that there was nothing wrong. Except last night, i started up my car and all of a sudden it felt like i was driving a brand new car... The gas pedal was much more reactive, i was going through gears much quicker, and was practically snapping my neck through second gear. Normally this would be a great thing, except that it highlights that there is a problem in my car somewhere. I'm usually somewhat knowledgeable with my cars but this time, I literally don't know where to start. Does anyone have any insight or suggestions on the matter?

to add; it sounds messed up, but for the first time im actually in love with my car... I want to keep it this way obviously. So any help would be greatly appreciated.

Thank in advance