Well today i just noticed a blackish smoke coming from my exhaust under wide open throttle, what the heck could this be?? It almost smells like electrical stuff burning, the color is between black and grey couldnt see it real well but definetly a blackish color, what should be the 1st thing i check for? Also, when im crusin not even giving it any gas at all, my speed picks up, even up hill, is my TB sticking or something?