Quote:
Originally Posted by classicswede
The 123 tune uses the vacuum signal direct from the manifold as fitted so that would be right. It is not an advance mechanism but a MAP sensor for ignition mapping
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well that stand to reason but a new question arises .. Why fit a programmed ignition system ?? Unless there have been other changes in the engine such as performance camshaft . :-)
I would keep those webers if this is the case ...