I also am enjoying my Q with the new designed tips !
Now that I am getting used to the sound (without baffles), I am thinking the mid-pipe would help to enhance the sound even further.
Just 200 miles ago I installed the RS Mid-Pipe in front of my RS "Q".
The "Q" seemed just a little to quiet for me. The sound was good, but the volume needed a little boost.
The RS Mid-Pipe added some volume, and gave the sound sort of a throaty growl. I love the difference it made. I wish I would have added this with my "Q" before.
My only caution is concerning the flat metallic flange gasket supplied with the Mid-Pipe and muffler. I had this problem. The flange ears on my OEM Mid Pipe were bent from tightening to the factory muffler. When I put the "Q" in place, the flat gasket would not seal to the factory mid pipe. I then used the Mazda O-Ring gasket on the mid pipe, which sealed OK to the flat flange on the "Q".
When I put the Mid-Pipe on, the flange ears on the "Q" were bent just enough that the metal gasket would not seal between the RS "Q" and the RS Mid-Pipe. Because it didn't seal, there was a booming bass sound emitted and it came up thru the trunk into the passenger compartment. very annoying.
I found on Miata.net to use a gasket sold by Advance auto, Auto Zone, etc. It is a "Walker # 31512". This is a composite gasket and it has a double thickness layer just around the 2-1/2" hole in the pipe flange. This extra thickness just around the center hole is enough to overcome any flange ears that are bent.
Here is a link to the thread I started on M-Net: http://forum.miata.net/vb/showthread.php?t=468164
Put the Mid-Pipe in front of the Q as soon as you can! You will be glad you did!
06 Winning Blue GT, aka Mxie; 6mt, Sport Susp Pkg, Prem Pkg 2, X-Pel Clear Bra, Wolo Air Horn, RoadsterSport "Q" + Mid-Pipe, RX8 Red/Yellow Dot Sways, + Kansai FST Brace.2006 Winning Blue Registry Link