engine revout

[supraluvr]

i just bought a 98 twin turbo supra but when i got it home and left it for a bit i went out started the car and the engne just reved straight up to the rev limet 7.5 revs and stayed there so i turned it off trid again and the same thing keeps happening does anyone have any idea what thios could be

[supraluvr]

this morning when i went to start the car it began pumping out white fumes from the exaust what could this be