Hi everyone, hope to find help on this issue. I have an s13 redtop in my hatch. It's been in there a little over 2 years and the car has never really been driven because I lost my license. I've had this problem pretty much the whole time. The engine starts right up ALWAYS without hesitation, however, it seems that in warmer weather, it idles very rough and there is a choppy lag when giving it gas or even holding steady throttle. On the other hand, I've noticed when the wealther is colder (60s and below) this problem completely goes away and the engine screams like a champ with absolutely no hiccups. The engine is completely stock except for an HKS cold air intake. Hopefully someone has some insight to this problem. Any help is appreciated.