Throttle was a key item if you want to release all the power of your car. The power will be locked at there when airflow did not go through the Throttle smoothly.
It's easy to happen at an old car which did not ever clean the Throttle, or a bad design expecially for electrical Throttle with stupid/lag control of car computer. Normally, carbon deposit is easy to happen at Throttle becasue the surface of it did not smooth enough.
So burnish the Throttle will reduce the carbon deposit and make you easy to clean it. If got tool, you can remove the edge of it to make airflow smooth when go through. The hidden power of engine will be released. You can feel the big differnt after did that.
Last word, go fast but drive safely. Don't blame me if you got ticket of overspeed lol