X2 here back in the day and we are talking about 12 years ago and the engine still running today, i did shift my 4 speed at 7,500 from 1st to 2nd and to 3rd 4th gear usually i shift at lower rpm's cuz the other guy already quit and trust me that car i use to beat on it more than 4 days a week on street races and was my only car so everyday use, and yea, it hurts a lot on the pocket with gas!