rsm setting or readings error .....

[na.tech]

guys,
i installed a RSM tomy 4G92 accoring to the apexi manual n now its giving rpm readings lower than teh stock tachometer ! i hav done some setting on the rsm like wheel size n all but stil its off the stock tacho :confused_smile: so anyone ecountered this probs B4 n please advice me or help me ...... thanks in advance :cry_smile:

 

[huakenny]

i guess digital rpm reading is more accurate compare to ur tacho....

corect me if im wrong