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Here is what I would do.
Disconnect the vacume retard line. Rev the motor to 4000 and set the timeing to 29 degs. I think your dist might need to be indexed one tooth. And then I would make sure the mech. advance matches the advance graph in the manual. Then you can screw with the vacume retard if you want.
Dean
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Dean
911 SC turbo, 3.0L 930 motor, G50, 930 brakes, DTA EFI, 352 RWHP DynoDynamic dyno,
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