true but i already have false miles...about 10-20k false miles. I bought my car when it had "60k" on it..and the speedo was off then. And then i put 4.10s in and now its WAY off and the odo says 71k now. My car really has like 50k on the engine...sucks for trade-ins though, no one would believe me or understand this problem. Carfax has my car documented at 70k now. THAT blows....