I sent in my FEM for my 2013 BMW 328i and it was stellar service from step 1 all the way to the re-delivery of my ECU, FEM, and keys. Aside from the fact that these guys keep you informed in every step of the operation and make sure you know what they find, these guys are what make me feel good about serving this country for 20 years and in 4 combat theaters. Every member of this staff should be commended not for the amazing work they do, but for their HONESTY, integrity, and morals. They informed me at every step that my FEM was working great and there was zero wrong with my equipment. Even went as far as sending me a video clip of them testing my actual units in a test vehicle like mine. They could have just as easily told me that the equipment was faulty and charged me a ton of money, but no, they unwaveringly told me that it was good and that they would only charge me for the teating fee. I had prepaid for the service I requested and additionally the overnight postage. They refunded the difference in the operations fee and even gave me, I think, a discount and got it to me overnight MUCH CHEAPER than what I paid to get it there. A huge thank you to the crew of ECU PRO! I wish my experience with every company i dealt with was as smooth, easy, and honest as my experience with you guys. Thank you so much and you have a customer for life here in this house!