@vj thanks I did pm viper
@rehaan - yeah I am sure I can find something more affordable, but seems I can do a lot more with gtech
(did i mention gadget freak hehe). well i am not expecting much out of it on my santro, but yeah its mobile and on my next car which will definitely be a more performance minded purchase, the gtech would be good to have!!
Ok so - indeed it is a chicken and egg problem and I will need some other form of rpm measurement to calibrate the gtech, hmm!!