Yeah, after doing some research (only very, very little) It supposedly can rust your pipes due to water vapor not being able to escape when it turns into gas if there is water trapped between the wrap and the exhaust system or something like that, so if there is high humidity where you live or rains and clears often you end up with rusty pipes under that slick heat wrap.
BUT I don't know if that true for sure, just what I remember reading about/hearing. I will do some more research and get back to ya.
And also what it really does, is increase the heat of the exhaust gasses by not allowing heat from the gas to be absorbed into the exhaust system. And since its hotter increases it velocity. So essentially the exhaust exits faster and hotter with ought heating your exhaust system as much. But I don't think you will get any major gains from it, but it will look cool
Sorry for the Novel of a post :razz:
(Edit) Ah! I found a difference between heatwrap and hi-temp powdercoat and such. Heat wrap Traps in heat! While a coated header does not absorb the heat! (as much) So heat wrap is making your exhaust pipes run much hotter than they are designed to be (In most cases). I dont think it will destroy your pipes, so If you just wanna go for style go for it. I found a usefull article and while its for cars it should still apply to motorbikes as well.
Here is the link if you want to read more, as I don't have time to look up much more.
[ This message was edited by: Comrade on 2006-03-06 23:45 ]