The Techno Pro Spirit MR-S Titanium 'Muffler' is advertised on Nengun. It appears to be wonderfully exotic though admittedly not really in keeping with the parts bin MR2 ethos. I can't find much more about them. Are they just a unicorn or has anyone seen one in the wild?
According to the top-spirit website (via Google translate):
"It is a full titanium muffler that is so sensual that the elongation at high rpm is incomparable to normal."
I'm not sure Id be able to concentrate on my driving!
Track/Race application only IMHO.
Also, fuuuuucking expensive.