Audi 200 Turbo ECU Up for sale is a Working, in excellent condition Audi 200 ECU. VW/Audi part number 447 905 383 L , MAC14 . This ECU came out of a 90 Audi 200-turbo, my list shows this should fit most 1989-1991 10 valve Turbo Audi 200 models. - a pretty uncommon car! As always your best bet is to match the part numbers with the original. This is located to the right of the passengers feet under the bulge. This is not an easy to find ECU, as this was a very expensive low production number car. These units now have to be special ordered from most dealers new for big $$ (often times over $2000!), and finding a good one second hand is nearly impossible. Though usually fairly reliable, these can be water damaged, or damaged by faulty sub systems (bad alternator causing voltage spikes, or getting a jump start for example). If you have a faulty ECU, you may have problems with no start, random stalling, rich or lean running, no start when hot or very cold, or boost pressure control problems.