If you want quiet,.. there's a price...
You might give up. a half a pony... you might also gain a little low end torque?...
If I find a little dude, local,.. I think I'll give it a shot...
You can always take it back out...
...
I got my little dude and put it in (uh oh). I think it made it quieter, but not silent. I also think it made the engine noise quieter. More back pressure maybe? Then again could be my imagination. My hearing is bad after all these years of working around noisy machines and riding loud motorcycles. Maybe you've got some good ears to hear it. Can't take it for a ride until it gets warmer. Maybe Ohio will have one of those weird warm days. 50 degrees would be good enough for me. I set the air screw mix at 3/4 out. Sounds like it is running great at that setting. Hoping to get 55 to 60 MPG.