ReachAroundRichy

I have a 96' 2.8l with quattro and a manual trans. Ran smooth as silk at idle and low speeds, but when I get up to highway speeds and try to push her she will get jumpy and throw a P0303 code. Plugs and wires where changed less than a year ago, but still had the original coil pack. I replaced that but I am still having the same problem, always a cylinder 3 misfire. My next guess would be a bad injector but I am just curious to hear what others think.