Quote:
Originally Posted by www.Unichip.us
A G-tech is a fine product, but it’s not a precision instrument and better suited to for general monitoring. Repeatability to within 1% isn’t what it’s designed for; if it was, the guys selling the $10k data loggers would be looking for a new job. If you do six runs back to back, you’ll see six different results. We used a G-tech on the 5.7L Tundra. We did 16 runs with and without the Unichip within a 1 hour period on the same day at nearly the same temperature, on the same test road and still had to average. It’s the nature of the beast.
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I found the GTech repeatability to be reasonable. Any significant variances I had were due to not cooling down enough between passes, or idling too long before launching (i.e. begins to heat soak).