I bought it the end of last year. Everything I've tried it does read my RPM's the right way. I don't know what the hell i'm doing wrong. Sent it back 3 times and i'm not get reading that are telling anything. i'm getting low numbers and the wrong ideal RPM.
I have a dual msd/ dual coil from speedway. it has a lead for the tack. I have 6aln msd boxes with rev limiters. none of the rpm readings go over 3000 4000. the inside is set at 8 cylinder.
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