Chris,

Thanks for the link to Paul's table, it provides some interesting results. The first is that R16 has no effect on timing with vacuum connected or at idle (which supports my findings). Only without vacuum (high load) and at higher engine speed is any difference seen. Secondly, it is interesting that progressively higher advance figures are not achieved at R16 settings approaching 1 (higher resistance) as some have suggested. The M102 engine listed only gave maximum advance in position S (1300 ohms in this case) with all other positions providing less advance. For all the engines listed position S (750 ohms on these M103s) gave what could be considered optimum, although for the M103 engines listed, position 1 (open circuit) did also achieve maximum advance, supporting the findings those who have achieved good results with R16 removed.

Again, I would suggest anyone contemplating the modification to either check results with a timing light or only use a value for R16 that corresponds to position S for their engine. As best as I can tell, for the EZL-KAT (catalyst equipped) M102 N = 470 ohms and S = 1300 ohms and for the EZL-KAT M103 N = 220 ohms and S = 750 ohms.

Thanks again Chris for providing the information.

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