89, 2.9, a4ld, stock gears, 31"s. will accelerate fine around town, up to 45-50mph, but when i get on the highway, i can barely get it to go 65mph and it wont rev past 3k in overdrive. if i shift to drive, it will rev higher and i can go from 55 to 65 in around 10 seconds, put it in overdrive...