so in your opinion what's the specs for the best sounding?

 

I think it was what Mark called the quiet street version with 100 cell cats. It still have some drone between 2-3k rpm, but much less than the previous exhaust I had.

I am fairly happy with the end result. I wish it would be a bit louder with less drone between 2-3k rpm, but I don't think that would be possible.

 

Being around P cars for 15 years and having bought numerous exhausts myself it is almost impossible to create a 100% drone free exhaust unless its as heavy as stock and if it has baffles like OEM.... I have bought, listened, drove, inspected, taken apart various exhausts and I really have not come across a single one that is drone free..
Drone I think is subjective as well... some clients get a full 3" loud version and they love it... yet to me it hurts my ears...

 

Says the DJ in a club with 20000 watts

 

I DD my 911tuning 3" Sport Version with 100Cel cats all the time. Tiny bit of drone around 2200rpm but you can shift around easily. Also -- it really is only noticeable if you're hovering at that RPM. If you're accelerating it's no big deal. I think I have 11k miles on it now. Never thought about replacing it for 1 of them.