Since I have owned my car it has had this rough idle when I boost the car and then stop at a stoplight it will idle from 1 to 1.5k to 1 to 1.5k and repeat this process but today it is 80 degrees out and it has idled normal all day between 750-1k Most of you guys told me to get a ECU tune but why would it just do it some days and not others?
Maybe try these TegTips?
http://www.g2ic.com/forums/showthread.php?t=42969&highlight=hunting+idle
http://www.g2ic.com/forums/showthread.php?s=&threadid=44386
I dont have boost, but what your describing sounds like one of those 2 Tips will solve your problem. Its common on a completely stock car, mine started doing in about a year ago, 200k miles on it, never did it before. Unfortunately, I took the expensive way to fix it, blew a hole in one of the #3 exhaust valves, and replaced the engine.