Originally Posted by Skyfall
I thought Torkoal (with White smoke) would avoid the whole "SPC attack has greatly fallen" effect from Overheat. It didn't. How sad. I was excited.
White Smoke only works on stats that the enemy tries to lowers, like with the Intimidate ability. It doesn't work if you lower you own stats through a move. http://www.smogon.com/rs/abilities/white_smoke
What you need is a Torkoal with the White Herb item, which won't lower your stats when you use Overheat.
Flannery the fire gym leader in Emerald uses a Torkoal with White Herb.