This a good working ECU from a 91 200 20v turbo sedan. This ECU is stock with no modifications. im the only person to open the ECU and i did so just to inspect it for corrosion to make sure it was 100% perfect because as you can see theres a little rust on the cover. I also provide performance upgrades including socketing ECU's, latch adapter board installation and MAP sensor upgrades for an extra fee. contact me if you have any questions at all. thank you. I'd like to get 500.00 for this ECU but im entertaining offers.