I fitted an RML 401MT distributor to my Spider while my 123 is being repaired. I plotted the advance curve and it is the Bosch 0.231.178.006 which was fitted to some Alfas. It is a docile curve with a range of 28 degrees and it reaches max advance at 5000 rpm. It is curve "A" in the 123 distributor.
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2011 Jaguar XKR
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