I bought a N/A ECU from this forum hoping to convert it with a socket and eprom for my 90TT but decided to go a different route. As I have a turbo car, I cannot directly confirm this thing works properly however, I was guaranteed it to work normally in a non-turbo . I have some pics of the ECU with the chip inside. To me, it looks like it already has an aftermarket chip that has hand writing on a sticky type of note on the top of the eprom. If you are interested, I'll email some pics. I am asking $100USD and I'll ship it at my expense for you!