Just wanted to post on here and say thank you all for the great advice and help you have given others with beautiful images and descriptions. I had some codes that seemed to haunt me (P0174, P0171) and had trouble getting it to pass smog. After finding this forum and searching the threads I was able to get my X5 running like new! Feels to have much more power and passed smog without any problems. Thank you all again happy new year!