Okay, I took my exhaust for a drive in sport and in comfort down a highway that has rolling hills. This highway for me is the worst for drone due to the high speeds and long climbs. The results were not what I expected. Around town the drone that I experience is almost non-existent. However, on the highway it was more than I expected in comparison to what I had experienced earlier around town. In my opinion and probably worse than my XForce exhaust that I had previously. I hesitate to say that because when I first received my Xforce exhaust the drone was almost unbearable, I expect that after I have this exhaust for a while it will be perfect. The exhaust reminds me of driving a V8 as it has a low rumble to it and seems to be fairly quiet unless I get on it. This exhaust is deeper in tone than what I had previously.
I measured my car exhaust from the cabin while I drove it between 65-75 on a 20 minute stretch of rolling hills and this is what I received:
Sport
Average: 67.9db Max: 80db
Comfort
Average: 69.4db Max: 82db
As you can see the lower RPM in comfort mode resulted in more cabin noise at the same speed. This can almost be completely attributed to drone while going up hills at low rpm.
Compare this to my Alfa Romeo that I drove on the same stretch for a comparison. Keep in mind that the 4C has no muffler and is pretty loud.
Average: 72db Max: 82db
The difference is that in no point did I hate how my 4C sounded, but I can't say that for the Stinger.
I was hoping this exhaust would be the panacea that I had been looking for, unfortunately it is not. However, this exhaust does has its own character that is distinct from the other exhausts that I have heard that sound trumpet like. This really saddens me because my 4C exhaust issues were fixed with by QuickSilver and with the Stinger it was not.
Here's a video if anyone is interested to hear what 4C with a quicksilver exhaust sounds like: