I had it on my E class, does work... no increased HP , but better responce from the motor... not sure if this will do the same on the X5...

ONe question, in the BMW X5, does the CPU have memory of how we drive? i ask because the E class did have this, and i had to reset the ECU every so often to erase the memory of driving in traffic (slowly etc..)

anyone?

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Christiaan.... 2008 4.8i