I recently purchased a NW CAI single for my Limited Roadster. The filter looks beat up quite a bit and I'd like to replace it. I want to go big as I can, and/or max flow.

K&N is not my first choice in filters so Im curious if anyone has tried to go bigger or use a different manufacture or style.

Also, anyone try a cover for their intake tube? That thing gets hot enough to fry an egg on after just a short drive.

I'd love some recommendations. I saw the volant thread (very cool) but I need sizes so I can shop online.