OK, first off hello to everybody! I am the happy owner of a new to me 2001 X5, 3.0. I feel that I got it for a steal and have been fixing little odds and ends but now I have a question concerning two of the more talked about issues. I recently got the 0171, 0174 and 0313 codes. Too lean on the cyl. banks and fuel level too low. So, I ordered the DISA rebuild from GAS. The SES light went out on it's own! Did I make the right move? Should I have waited for the SES to come back? Should I have done the CCV first? I don't have any idea if these have been changed previously. Any feedback or advice would be great.