I have an 06 I4. With that said I have added the steeda CAI and TBS in addition to removing the resonator and puttting on a dynomax supertubo mufler. The car sound amazing! My wife whinds it up all the time. Now here is my question do I need a tune. Steeda writes that you dont need a tune when you add the CAI to the I4 but compounded with exhaust and the TBS should I get a tune and if so I am cluless as to my next step.