I have a bad relay, which has something to do with a mechanical switch on the MFI of my 73 911S. It sits on the board next to the rear window defroster relay. On deceleration, the little mechanical switch closes and the relay is supposed to cause a change in the fuel/air mixture. My relay failed, and now my beautiful car (with a brand new $1000 Leistritz muffler) backfires constantly like an old jalopy. The part number is 901 615 113 00. Porsche lists it as a good part number, but no one seems to have one. Do any of you have a source for one of these parts?

Silver Surfer
'73 911S Sunroof Coupe