Hey guys, need some help! went for a cruise up to the river and when i hit speed of 100 and over i noticed the engine started to back of a bit and i had to put my thought down on the pedal to keep it at the speed. something seem to be giving the engine a hard time. after driving it for 70k or so it went away. And was fine half way back on the trip home but then the problem started again. Don"t know a great deal about cars. thinking it could be a fuel pump issue other wise not sure wondering if anyone else has had this problem?