Originally Posted by fast75vega
we use the newer snap on digital gun... it works great :wink:
Heh, heh, are you sure?
Just being the "Devil's Advocate" here, but How does one know, for a fact, that any of them are perfectly accurate?
We use the same one, but periodically, we check it against the MSD "Smart Box" we use and once in a while, with another guy's similar Snap On digital . . . so far, so good . .
I still think you're better off, especially with Snap On, Matco and some of the other professional Timing Lights, to take them back to your dealer in the off season and have them recalibrated. It's cheap insurance . .
Another thing to remember, the power supply you use must be a fully charged 12V battery, and have very good connections. Even the digital ones will work on a short power supply, but not necessarily accurately.