Yes, Flitz is great! I discovered it when learning how to clean the exterior of watches. I don't try to keep my CS's exhaust tip shiny (since I actually, oddly, prefer the weathered look), but I do use Flitz on my polished Tubi exhaust cans.

Snaxster

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2008 Boxster Black/Black/Sand Beige, 6-speed, PASM, 18" Boxster S wheels, Preferred Package Plus,
Sport Steering Wheel, Automatic Climate Control, Windstop, Hardtop, Porsche rubber floor mats,
deleted model designation, clear side markers, 3M clear bra, set of winter tires and wheels.