Hi,
I once installed the aftermarket RPM guage in my Santro. The main problem was that , it didnt show the exact reading. It used to show the cut off at 4K rpm.. In other words it just used to work from 0 - 4K. and used to show false reading all the time.
Now the only reason why i am not going for an RPM guage for my JDM Alto just becaues of the false reading.
Those members who have these Aftermarker guages, can they tell if they show the accurate reading or not?