Quote:
Originally Posted by TrueblueGTO
Hook up a data logger and see which one is right you can't get any more accurate than taking it straight from the ECU.
I would think if your digital gauge is reading straight from the ECU it would be pretty close to spot on.
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I would have to tend to agree with you there....and actually, my thought is that the needle on the tach in the dash is analog...so that it actually takes time for it to "sweep".