Thanks for a prompt reply.
I am not sure about the ignition coil type, but i have tried to get the pulse from ECM in a trial Tachometer(Autometer) from one of my friends. It showed half of the actual RPM
, i.e the idle RPM is set at 900 it shows 450. Tried with another tachometer also, but resulted in same.
My friend says Eon Iginition is a distributorless ignition, so the pulse is half of the actual value. I am not able to figure out from where to get the pulse and also whether the tacho needs a calibration or not?