I'm thinking about buying a K&N CAI for my 05 sedan and I was wondering if there's a good exhaust to go with it for hp gains as well as sound. I heard good things about hks, but then I read it only helps with sound. Any and all suggestions posted would be much appreciated. Thanks.

Intake does not help hp. There's no point on getting one unless your going for the sound.

Stillen Intake
Motordyne Plenum Spacer
Motordyne ART Pipes
Motordyne XYZ Pipe (with HFC)
Motordyne VQ or Harakiri Y-back

Motordyne = Win

^good luck getting a motordyne exhaust..... great product, but everyone who has one doesn't wanna let go of it

^^ SO true. It's really a shame the petition for Tony to make another run fell short and he didn't make them.

I'll probably never sell mine, it'll go to the grave with the car.

Keep an eye out, I see them in the market place every once in a while. I remember that perition, i was on the list but had to back out due to financial issues, and didnt see a point in paying $800 for a shiny Y-back that is going to see mag-chloride for 5-6 months a year. I am wondering how much of the price could be cut down if only the tips were polished and every exhaust component was stainless (ART, XYZ, Mid & Axle back).

Same here

Tim, do you have the Harakiri or MD VQ?

***EDIT. Answered my own question:

Yep, I got the prototype VQ from Tony.