I have a 2005 elentra 5 speed with 140000 miles on it. recently once it gets up to temp it will sputter and will respond late to throttle input. But the weird thing is when I restart the car wont sputter anymore. I am going to try and get a video of this and post a link, but i could use your help in the mean time.

 

Scan the computer for any stored codes first.