Well, I hope this does not lead to more problems. I just had it done last week. I have an 03 M3 Coupe manufactured on 5/13/03. They have to lower the front axle about 10mm, and remove the oil pan to access the rods. The bottom of each rod has to be carefully removed inorder to remove and replace the bearings. Then, everything needs to be reassembled and torqued to specs. The DME software was updated with a rev limiter for "free" reving (i.e., not in gear), and the engine oil needs to be hotter before the orange lights on your tach are extinguished. You have to also observe a 1200 mile breakin period where you cannot rev the engine past 5500 rpm, and cannot exceed 105 miles per hour.