Gave it a try , a bit droney 2.5-3k rpm but overall much louder up to 3k rpm. I like it , it gives the car much more presence .
i will leave it a bit and decide if i like it or not.
just wanted to share my experience .

 

Thanks for share, I tried that with the RSS and factory sides, valves disconnected (still have if anyone wants to buy from me PM)

I thought it was too loud driving around and became annoying. Keep in mind high levels of sound over 85 DB can damage your hearing

Now I have the IPE exhaust which has muffled and valved before 4K and after that all hell breaks loose, you literally scare people