Contour Enthusiasts Group Archives Forums General Troubleshooting CEL, Running Lean, What to do??

Well I installed a Pro-M, and the Aussie Pipe. I got a CEL about 24-hours later. I got the OBD-2 scan and it said I had 2 codes and 170's which said that I was running lean. So I checked all the intake hoses and made sure they were all tight, which one wasn't. That was the one that fixes the moosing. So I disconnected the battery to reset everything hoping the CEL would disappear, well it is back, and I don't know what to do. Everything seems to be rinning fine. Any Ideas would be helpful. Thanks!!