This is my friends maxima, i know its not a honda, but just generally i thought id ask, dont know if hondas have had this problem. So hes saying he cruises in 5th, he floors it, revs climb up and then frop to normal range and then the car lunges forward, like something is slipping, what do you guys think it could be?

 

sounds like the clutch is on its way to becoming a polishing wheel.