i just baught a quest a couple months ago without knowing what they are but i did my research but theres still a couple of things about mine that bug me .first the car revs to 7,200-7,300 rpm i know thats not normal.and it idles at 400 to 500 rpm dontknow if thats normal.it looks completely stock runs perfect no hick ups .what would have to be done to the motor for it to handle that rpm dont know if previouse owners tinkered with it