I'm not big on heating the battery with an exaust system. I prefer to have access to lines and cables 'cause you never know. I route them for maximum protection from jacks, rocks and bottoming out etc. If I had a show car or bike them concealing things keeps 'em looking a lot better but I would rather ride my toys than giving others the pleasure of lookin' at 'em. Readily available parts and access to them is important to me.