Installation was not too difficult. It took about an hour to remove the factory unit and install the CAI. It sounds great. When you get on it, you can hear it suck air. I love the sound. As far as performance, it's hard to say without verifiable numbers. However, it certainly feels stronger but that may be optimistic. I installed the JET chip this weekend. I'm going to try and get it to the track next weekend and run it.
If you like to drive that beast hard through the corners, you might want to add the Ultimate Pedals' Dead Pedal. It will help support your body and keep your shoulders from moving under hard cornering Gs, thus giving you better steering wheel control.
I thought about the dead pedal but it looks so big it seems to overpower the look of other pedals. You're right about the support in the turns though. I'm just going to have to plant my left foot in the corner and hold on.