SloPro48 & Others: The two on this site that have installed SuperTrapps both like them and noted exhaust reduction of half of what was there previously with older performance mufflers that were failing to reduce noise to a reasonable level. These were both 4" SuperTrapps. I am planning on getting the 5" variant, which should offer a substantial noise reduction from the 4" model. I think that difference may offer as much noise reduction as 2 of the fam's old performance mufflers were offering them. I know it will be louder than stock, I just don't want it to sound like an opened up harley either. This is the largest exhaust SuperTrapp makes, at 5"x 17-1/2" case size. Again, I am supercharged.
I also have to go through 2 DMV inspections, including a road test in the vehicle. I was thinking it would be nice to tune it really quiet for these tests, and then be able open it up a little for a less restriction and exhaust note. I like the idea of being able to tune it, as altitude is always such a factor where i live, and where I play.
So big question is, will it be quiet enough on any setting?