RRT was able to diagnose and repair the issue with my X5M. Took my truck to BMW they wanted to replace the high pressure fuel pump for $4500 but they were not certain this was the issue. I took my truck to RRT they determined the low pressure fuel sensor was the issue. The guys have great knowledge and exceptional service. My truck would not pass emission do to the cats being removed. RRT installed new cats and the truck passed emissions. RRT also installed a stage one tune to increase the Hp. I was very pleased with the service and there knowledge. I would highly recommend RRT the guys are great.