Just had a super turbo (2.25" in-0ut) installed today. Much quieter than I was expecting.
Really not much sound @ idle IMO, but does get a little more aggressive when I put my foot in it...
Can hear the S/C spin up much better than before.
The ol' Borla was shot, something came apart internally, & was making a nasty rattle. I removed the "strainer" from the tip as well, & it's still a little quiet for my taste in mufflers, but I'll adjust.
Overall, very happy.
Hey larry just do like i did....want more ? get another muffler in there