Well it's been a few days installed the ems stinger and it's been great we got everything working but the tach is the only thing that is not working properly.

We think it's becuase we have 4x msd ss blaster coils one for each plug with a 4 coil ems igniter.

we connected a wire to the trailing coil and that wire to the yellow green wire and the tach works but not properly it keeps bouncing around, what i wanted to know is if I put a msd tach adapter would it fix my problem? the output signal is to weak?


did not know where to put this thread there is no ems stinger section.