Added more discs, now running a total of 30. According to the manufacturer 20-24 should be equal to an open pipe. Pulled pretty well into 3rd gear today, hope to try it on the eighth mile track. Can't hear any rasp from inside yet. I can hear the "sound" of the Borla thru it all, though.
![](http://i493.photobucket.com/albums/rr299/Gflash01/Supertrapp-4_zps662a4bb9.jpg)