Talk to gofaster, he had a single Neuspeed chip in his 96 passat. This ECU requires 2 chips, the only thing that is happening with one chip is that fueling is being increased, the other chip is controlling turbo boost, it was a really tough nut to crack, as far as I know Upsolute is the only tuner that offers both chips for the 96 passat, allot of thanks to go faster as he tried at least 10 variations until we had it going.