Almost every M3 that I work on that has a modified suspension from another "shop" either has the rear sensor attached incorrectly or they have broken the sensor.
For you DIY guys, please pay attention to how something was installed and put together before actually dismantling things. It might be a good idea to take pictures of certain things before they are apart too.
Good luck guys.
JAJ good looking out!
BMW PERFORMANCE SPECIALISTS. Suspension. Forced Induction. Brakes. Race Preparation. Service. Alignments.
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