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>Will this have to be adjusted? Ack! John! No! Quit adjusting these things!!!!!!!!! :-o ;) They're adjusted when they're manufactured, and are virtually unadjustable without the proper equipment. I don't even think that Jim Adney dares adjust these! Once you tweak it, you'll never be sure if you've got it right. I'd install it, and if it doesn't work right I'd start looking elsewhere for the problem. Have you got a tach/dwell meter and timing light? Fuel pressure gauge? Compression tester? I don't remember all the details of your symptoms, but I've had some really nutty things happen -- such as distributor shaft/bushing wear (elusively makes your dwell/timing random at times), on again/off again loose wires on injectors and sensors, you name it! Keep plugging away... it's got to be *something*! I know of several people who've taken their cars to VW or other authorized Bosch mechanics and paid for one or one and a half hour's worth of diagnostics. After getting the full, accurate report, there's no more guesswork. By the way--how many terminals are there on your throttle position sensor? I've never tried, but it seems like it would be hard to get a '72 brain to properly manage a '71 system. Perhaps the entire engine is out of a '72??? -Greg '69 & '71 Squarebacks '63 Beetle