Fuel Supply & Treatment. Intake & Exhaust System. 2011 BMW 1M Coupe. Engine Code(s):N54B30, N55B30. 1 x aluminum intercooler. Intercooler Core Size:20.47″ x 5.12″ x 5.31. CARB EO #: D-759. 35°F (19.45°C) reduction in AIT. 22% increase in core size. 100% aluminum, TIG-welded with cast end tanks. Available in Stealth Black or Sleek Silver finish. This intercooler is rated for approximately 500 whp. Exceeding these horsepower limits could require a custom-sized front-mount intercooler. Doesn’t come with installation instructions. As you may know these are after market parts. We recommend professional installation Only. Your Full and Correct Address, Postcode(Make sure address is correct and we sent the goods only by the eaby address). Our logistics department cannot deliver your orders during weekends / holidays / office closed hours or at special timing. Import Duty & Other Charges. It will surely help us in better serviceability and would also assist us in improving our business standards. We assure you of resolving it in the best possible way. China Beijing time (GMT+8.0). Monday to Friday only(excluding Holidays).