I recently purchased a 1986 BMW 635csi aka The Shark. I have been wanting one of these BMWs for years but every one that I looked at here in Illinois had horrible rust and rot. This example had been purchased in Texas and was brought up to Illinois in 2002 as a non working project car. That owner quickly tired of paying shops to attempt to fix this Big Coupe and he sold it to another guy that thought he needed a project. That owner took it to several shops and yet nobody seemed to be able to make this BMW cruise once again. after a few tow bills and shop bills that owner sold it to another. This time it was a young hipster with great ambition. He plunged right in and swapped out parts like they were on sale a great discount. Tragedy struck when he lost his job and had to move to the big city. I received a phone call with an offer too good to resist so I went and retrieved this gem. Now the 1986 BMW is a Motronic 1.0 ecu equipped vehicle with no onboard diagnostic so one has to slowly go over each and every component and test to see if they are operating correctly. I discovered that this one had several ailments and i swapped those out for new parts. Now she is up and running but had and an intermittent issue, it would simply shutoff without warning. I decided to change the ecu. I purchased 3 of them from a local auto parts store and none of them worked. so much for remanufactured computers. I decided to take a gamble on an ebay used ecu(DME) and purchased it from Patrick. Patrick was quick to contact me and get the ecu sent out. As soon as I received it, I ran outside like a kid at Christmas getting all the toys that he so wanted. I plugged the ecu in and instantly, the Shark was a live and vibrant. her rpms revved freely, her exhaust note was a quick bark. I closed shop and drove that BMW for over 5 hours non stop. Thanks to Ebay and an honest seller, my dream of late summer cruising thru the countryside has come true. Total Automotive bliss