re electronic odometers was used bmw question in article apr porthos cc bellcore com dje bmw nosubdomain nodomain don eilenberger writes in article apr nimbus com jimiii nimbus com jim warford writes there are two simple procedures for alterating any odometer mechanical driven odometer remove the speedo cable from the transmission attach a drill and run at max speed until the speedo turns over continue until the desired mileage is reached electronically driven odometer remove the sensor wire from the sensor attach the calibration out signal from an oscope to the wire run until the speedo turns over and attains the desired mileage dear faster i kinda wonder have you ever tried version on what since the sensor wire on a bmw feeds also into the computer and we don t know what signal voltage is expected from it bad things could happen also since we don t know the pulse rate we may damage the analog part of the speedo yes bmw uses a combined instrument speed in analog trip and total milage is digital with the needle pegged up against the mph stop just a thought you ve got the oscilliscope so you connect it up to the sensor wire and measure this stuff that way you know what it expects matthew t russotto russotto eng umd edu russotto wam umd edu some news readers expect disclaimer here just say no to police searches and seizures make them use force not responsible for bodily harm resulting from following above advice
