I can agree with you on the staining but not the rusting. Unless you’ve covered bolts with it. And you might trap water against something that is prone to rusting. I kept mine on the stainless.I don't think the rust and staining on your original exhaust was related to the salt air but rather the increased heat being held in by the wrap. I really like the racer end can on the Classic and think it should have been on the bike instead of the dual Akra... I doubt your bike's electronics will care one way or another about the end can as they are probably both very close in flow. I on the other hand have a full Ti Akra without a cat and really open end can. It runs great but I think would benefit from a Rapid Bike Evo or Race...