[CFMCNC]

Have had original Sun ,Snap On,MSD,and Sears.All non advance feature.All were good.33 years of engine dyno testing.Currently have Electronics Specialties #130.First one lasted 6 years of constant dyno work.On the second now,For under 80$ cant go wrong.WE usually ask customers to bring their timing lites to dyno session for comparison.Bill C.