I got tired of that little 1 1/2 inch intake tubing on the CX. So i took the old 3" (or whatever it is) ebay intake I had on my old saturn and made it fit. It actually makes a difference, suprisingly. It seems like I actually have some sort of acceleration, well, more than before. Just had to say it, cause I never messed with the D series last time, and it actually responded to the intake. Sorry, I just got excited for a minute.