thrustercat it only does that with carburetted bikes, because they suck fuel in rather than have it pumped in, when you flick the kill switch to off on a FI bike it kills the injectors too.
Pity as it was great for losing those annoying tailgaters!
Lane my 998 backfired like you described on my local highstreet (Ealing Broadway where the bomb went off in August2001)
It was so loud that everyone thought it was another bomb and they all hit the deck
[Edited on 28-7-2003 by DJTera]