The FWI does give the supercharger more of an apparent whine, which is pretty cool, plus it really wakes the engine up. I'm sure a CAI would do the same. If you're planning to do your own FWI, I would recommend using intense-racing.com "tubing" as it is very smooth on the inside allowing airflow to pass very easily. Others use PVC pipe found at just about any local hardware store, but it takes much more ability to build it.
As far as boost bypass, check out this website http://www.mccgp.com/upgrades/boostb...ost_bypass.php
as it explains it perfectly.
Rogue: Thanks for the input on the PCM. Now that I know the PCM case is waterproof, I will remove the plastic and let it stay cool.