How much exhaust fumes do you Z1 owners notice, idling or even riding very slow ( very rough trail ) ?

very little or nothing at all once the sled is warmed up.

Maincat, thanks for the reply, I've been having a problem with getting sick while riding. I've noticed that I'll start yawning and feeling sick to my stomach. If I'm riding aggressive in the rough stuff or just fast I don't seem to have a problem. If I'm riding slow or sitting around idling I really notice the exhaust fumes much more and shortly there after I usually start to feel sick. I spoke with a old friend the other day and he said the fumes use to bother him with his 2 stroke Yamaha but since he switched to a 4 stroke it hasn't bothered him since.

2 stroke fumes really bother me now as my group is almost all 4 strokes. I lead and can tell a mile before I catch up with a group in front of us because I can smeel the 2 stroke.