IW STi Forum banner

Heat soak on highway...possible?

4.2K views 5 replies 5 participants last post by  crick0234  
#1 ·
Is heat soak possible while moving down the highway at 80mph? Have only heard about it while stopped at a light.

Stock 2013 STi


I do a lot of driving in Yuma, AZ. It is freaking HOT here. The other day I was driving down the highway and all of a sudden the car felt like it had lost A LOT of power. Acceleration was slower and felt "lurchy"....like a AF mix, or something. No lights on dash. No indications that something was wrong.

It was about 105F and 95% humidity.

The car doesn't seem to do it as bad now (this was about 3 days ago) but humidity is much lower; mid 20's.