I've been working on an alternative CAI for the xfire for a while and I think I've found the most promising solution (so far)... It took a while to get my first sample, but the Apollo CIS Systems available from K&N look great. They are a sealed enclosure around a K&N cone filter that is designed to clamp intake hosing to.

I chose these because I'm trying to maintain everything in a close-to-stock location while maintaining the symmetry that makes our engines look good. The first CIS arrived in my hands today, and I'd have to say that I'm more than pleased with it... Although our cars should only need one of these, for symmetry I order 2. The second CIS should arrive in about 2 more weeks, so it'll probably be 4 weeks or more before I have the whole system worked out. But anyways here are the pics and dimensions.

Looking inside:


Whole Kit:


Side View with nose cose snapped on:



Dims: