Have a 2010 Limited, installed a 2-1 exhaust with a Power Vision tuner last fall. I have put approx. 2k miles on it and the muffler is already gold looking from the collector back about 10". I have ran several auto tunes and the bike runs awesome but the goldish color seems to be getting worse. Any suggestions on things to do with tuner to stop this problem? Anyone found any way to remove the gold color off the chrome? Thanks.