I just put a Stebel on my fizzer a couple of weeks ago. There's a mods thread about it that I posted a few pictures in.
I got to use the Stebel "for real" last week too - some jerk cager backed up by slow/stopped cars in his lane decided he wanted my lane because it had no cars in it and turned very quickly into my path, not even looking at all. I was riding with full alertness and control, so had already anticipated his stupid-ass move and was breaking hard by the time he started to move over. When my speed was low enough and I knew I was going to miss him (by a few feet - actually no real danger at all), I let him have a nice long blast of the Stebel. JEEBUS, that thing is LOUD!!! You should have seen him jump!! Scared the sheet out of him (literally, I think)!!! It frightened me, and I knew the blast was coming!! I drove slowly alongside the driver's window and gently tapped on it - he refused to even look at me, but looked sufficiently guilty, so I let him off. I dont' think he'll be doing stupid moves like that again for a while. :spank:
The Stebel horn is a MUST HAVE mod IMHO. Go for it. :rockon:
Cheers,
Dave F.