With Eric's chips, you won't get a code.  I left the the one vacuum line to that can beneath the charcoal filter under the wheel well.  I left that one because I thought it might help with the vacuum brakes but who knows. Removed the other vacuum line completely. I used a zip tie to secure the fuel tank vent line between the header panel and the radiator.  No problems with a full tank so far.  You can remove all the EGR stuff as well.