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Hi Guys,
I've just fitted an MSD Shift light to my MSD ignition and the revs are reading about 400 RPM higher than my mechanical rev counter, I know my rev counter could be out by 50 to 100 rpm but not 400, any suggestions?
i have a tube style from autometer, and find it'sabout 100 rpm's off at 6000 on the tube, and 6100 on the mechanical. not bad. like mine i think your electronic one is most accurate.