Hey guys...I have had my car for about a year its a 97 civic si...i haven't had much money but after the summer I will have about $1400-2000 to drop onto it...there is a problem with it though...when i put it in park it revs up and down a bit i dont' know what causes that..and I was just looking to see if anyone knew...and for that amount of money what could I do to maybe beef up my car so it will run a bit faster and just smoother overall.

 

Any help would be greatly appreciated...I am not much of a car guy but i know somone that can help me install the parts...just wondering if anyone had some input..anything will work. thanks again