Matts00GT

Somewhat. They do have mufflers of course but theyd be similar toa glasspack. They are more refined though. It will sound raw and pop and gargle (which I loved), but it wont be near as bad as "straight pipes" with no muffler. I wouldnt recommend the O/r x with the lm1s as it would be VERY loud. I ran the upr o/r x with the lm1s and loved it, but I like loud exhausts.

It would be deep, but the 'loudness' would be the most noticeable part. If I did it again, I would probably throw an o/rprochamber on with the lm1s.