Originally posted by ZigenBallz
I disagree....
I have an aftermarket tach and it is more accurate than the stock tach...
at about 3000+ rpm the stock tach is off by almost 100 rpm's... it just gets worse the higher you rev.
So yes it actually does have some value... being a more accurate gauge than stock.
As for there being a need for it... well, no, not really... unless you really have a need to accurately gauge the rpm's....
but how do you know which one is the accurate reading? the aftermarket tach could be the one off 100rpms.