Long straight pipes work on bikes that are already slow, but I am sure someone can tune them. I would love to see it (and hear it) with anything cone shaped.
Finally did this. Had been pulling into gas stations and dipping one of their paper towels into the squeegee bucket, until one smelled like sewage. Fuuuuukkkk that. Walked around Walmart in desperation until i found a small generic spray bottle in the travel section. Works perfect! -problem solved.