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> > you can't normally adjust it anyway. They quote 0.7% CO for the > > adjustable units (mostly fitted to the Type 4, but they did supply > > 'brains' with a potentiometer as service parts for Type 3s). > > Really? I've never seen one and there's no mention of it in the > Bosch service literature that I have. OTOH, they give a number of > ECU substitutions that are possible if you are in a crunch, so I The Elfrink FI manual talks about the Type 4 ECU that came out for '72 (p.60 in my copy). This ECU has a potentiometer for the CO adjustment. No mention of such an adjustment or service part for Type 3 though. -Mark ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/