Review on 🚀 K.A.T. Matrix 3-Axis Accelerometer for Boosting Car Performance by Ryan Frawley

Works pretty well for the money. I've had it for a few years now but haven't used it lately due to a loose clasp. The matrix is pretty easy to use and for the most part I've had repeatable results. I'm sure there are better ways to measure 0-60, 1/4 mile and horsepower, but unless you live near a drag strip and don't want to pay for a dyno, this is a reasonable substitute. I suggest doing a few runs on average. The plastic snap is not the best. Mine is loose and the gauge cuts out on hard hits or hard acceleration. A hard start is out of the question, which is required for 0-60 and 1/4 mile acceleration. That is why they are almost not used in recent years. Phone applications may work fine.