So I changed my AMM which was bad. How long will it take for the car to adjust the adaptations to the new sensor? Is there any affordable tool for the DIY person to do this with? (I am guessing no). Is there any harm from letting the car adjust itself to the new AMM?

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra