Be careful with the Blue Away...Blue xxx stuff, it will ruin your finish over time.
Works very well and looks great, but after a few years you'll be regretting it.
The stuff is very abrasive, and every time you use it, it takes the finish off, eventually after a few years of use, you'll be left with brown "rusty colored" pipes you can't do anything with.
I've ruined 2 sets of motorcycle exhausts with this stuff, yes I'm a slow learner..
If you really want to keep that finish, use one of the specialized ceramic coatings like Jet-Hot, The specialized ones do some chrome finishes that look great when done well, they are not the normal silver that most ceramic coaters will provide.