i have a K&N filter(drop in) and i took it out yesterday, cleaned and reoiled it and i have to say my car actually runs better. im not saying its faster its just the engine seems smoother, way smoother. is this what normally happens when you clean it(first time cleaning since i bought the car 10k ago) or did i accidentally fix something while cleaning it lol. just wondering, nothing was broken either im just wondering. also how often should i clean this cuz now i wanna clean it often lol