Check all the vacuum lines for possible leaks. You should be able to hear a leaking line with the engine running. In the old days prior to fancy sensors, you could easily locate a vacuum leak by spraying some ether or quick start around the engine. When the idle sped up, you found your leak. Don't do that here as you can quickly ruin a quality sensor, but do check for leaks prior to automatically arriving at a defuctive part that costs $$$.
As for rerouting the hoses, you can only look to do this if you are also looking to modify the manner in which your air cleaner assembly mounts on top....