Wow! This is such a great thread! Fantastic Review man. I just bought an E92 XI and am catching all the engine maintenance services up as well as my repairs. I am completely new to BMW's but I am a mechanic by trade and have become passionate about the N54 platform and E92 chassis. I will be doing my own Walnut Blasting to my 54 very soon, especially after reading and learning all the info I have so far. Thank you for writing up such a great guide!
