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I was able to replace the Manifold Pressure Sensor in my Fastback ('71) with a working unit from a local wrecking yard ($25). At first it complained about the newly lean mixture, but after a bit of driving it was fine. I did have to turn the idle down a bit, though. I also correctly hooked up the injectors. A PO had decided that the D-Jetronic strategy of alternately firing the front and rear set of injectors was no good, and hooked it up so that all of the injectors would fire once every two engine rotations. I was able to fix this with a bit of help from the Muir book and multimeter. I now need to turn the idle down even further. The fuel economy has roughly doubled, from about 10-15 mpg to 25-30 mpg (going fifty on the freeway). The car has still been eating voltage regulators. Fortunately I was able to return the cheap American imitation model to Pep Boys, and fix the original one (a couple of contacts had welded together). The "hecho en Mexico" Bosch replacement was doing quite well (50 + miles) but now also cuts out after a short (2 min.) time. I have a potential high-resistance short to ground that I will fix this evening. I'll let y'all know if this works. -Frank '71 Fastback (kinda sorta for sale).