Speed Sensor Delete Chips
What is a speed sensor? Pretty much all BMWs use a speed sensor to monitor rpm, ABS and traction control/ASC operation, windshield wiper speed, cruise control and of course the speedometer. In fact, the speed sensor is one of the most vital sensors on the car. The sensor is plugged into the back to the differential and takes its reading from the trigger wheel inside the differential. Like an oxygen sensor, the speed sensor is multi-functional and does a lot more than just send a signal to the speedometer. The DME relies on the speed sensor signal to set the maximum rpm in each gear.
What problems come up with the speed sensor?
What does our chip do? These special chips do not need the signal from the speed sensor so that part of the chip’s code is erased. Instead the DME relies on the specific parameters and data points within the chip itself. We don’t delete the sensor itself since other parts of the car rely on its information. Instead we remove the programming from the chip so the DME doesn’t look for the signal anymore. This chip can also de-activate the EWS-II system if the DME is so-equipped (click here for EWS-II info) (http://www.turnermotorsport.com/pages/EWS-II.htm).
This is not a catch-all answer to every problem that crops up with racecars or during a engine conversion. But like the other parts we have developed, it makes the job – and life – a lot easier.