I am planning on getting an offroad x-pipe and the K&N FIPK. Will I need a tune when I add these two parts? I have read the the CAI will make you run lean, and the offroad x will make you run rich. So should I be ok with the factory tune with regards to these two bolt ons? It is my daily driver, so I need it to run well with no hick-ups. Thanks for your input. I currently have the K&N drop in airfilter, so I was thinking of just removing the air silencer instead of buying the CAI. ANy thoughts???