Turbo to intercooler, most of N55 BMW Charge air tube will damage, upgrade your Charge air tube. FOR: 1 series E88 (09/2009~10/2013) / 1 Series E82 (09/2009~10/2013) / 3 Series E90 LCI (09/2009~12/2011) / 3 Series E91 LCI (09/2009~05/2012) / 3 Series E92 LCI (11/2008~06/2013) / 3 Series E93 LCI (11/2008~10/2013) / X1 E84 (04/2009~04/2015)