1-Series 135 E82 / E88 2007 - 2013 with 3.0L N55 Engine. 1' E88 (09/2009 — 10/2013). 1' E82 (09/2009 — 10/2013). Pressurizing the system will allow you to run peak boost your motor was tuned for and ensure you are putting all the power down without any leaks.
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