Installed my Pheonix yesterday. Didn't get to try it, had a party to go to. When I was putting the switch in, the little ring that limits the switch to 6 pos. came off. Not knowing exactly what it did, I turned the switch, hey there are like 10 or 11 positions. When I put the ring on, well 50% chance of putting it on right.
So today when I tried it, NOTHING! I have stock, whisper, fuel sipper, 80 perf, 40 tow, and lope. No change in sound. So I took the dash apart rotated the ring 180* and guess what....IT WORKS
So the moral of the story, make sure the ring does NOT come off. Weather is lousy so no road test yet. Be sure to give an update on performance soon.