Quote:
Originally Posted by Rich Biebel
My last stocker, a number of years ago had an Autometer tach that was off by 500 at higher rpm and about 200-300 at lower rpm...
That was not the first Autometer tach I've had that was off but was the most inaccurate
I used an MSD ignition tester to fire the ignition and it reads rpm right on the tester. It can be used to test many items rpm related including a tach.....
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Had an Autometer tach in my car for a while. Was wrong, just removed it. No tach now.