Odd starting and burning smell.

So from the beggining. I would get in. Either let it fully warm up in the driveway or if i'm in a rush i will just short shift and keep it under 2500 until its fully warm. So maybe twice in the year and a a half i have owned my rx8 the car will studder start and begin shooting out smoke that smelled hot and kinda like burning engine.the first occurence was running into the store real fast. When i came back out and this happened i thought it was some version of a flood because the store was fairly close to my house i figured that i wasnt Truly warmed up. so (at proper tempurature) i floored the car all the way home and sat in my driveway redlining it. (This as an effort to burn off any excess fuel). Well it worked. After lots of revving i cut it off. waited 30 seconds and it started up gloriously like before. Well today i had the problem again when getting gas. i drove maybe ten minutes from work to the gas station. it studdered so i finished getting home and i used the same method to fix it. lots of redlining. What is everyones oppinion on this Is this some sort of slight flooding? or am i just ruining my engine by excessive redlining. i have no idea. i just know the redlining fixes the problem.