Fitment BMW 550I V8-4.4L 2011-2016 BMW 550I GT V8-4.4L 2010-2017 BMW 650I V8-4.4L 2012-2017 BMW 750I V8-4.4L 2009-2015 BMW 750LI V8-4.4L 2009-2015 BMW ALPINA B7 V8-4.4L 2011-2015 BMW M5 V8-4.4L 2012-2014 Features Difficulty in starting a cold car The car with petrol The idle dithering Easy to stall while driving Increased fuel consumption Slow acceleration,obvious lack of power Include 1 x High Pressure Pump What goes wrong .