I bought my 997 a while back. The exhaust tips look like crap. They are stock polished silver but are now brown and tarnished. I've tried Never Dull, Simple Green and a couple other products without luck.

Any recommendations to get the shine back?

Thanks

 

Barkeepers friend powder in the gold can does an excellent job

 

Now would be a good time to consider getting your tips ceramic coated. If you don't want to go that route take a look at these:

http://www.detailedimage.com/P21S-M1...-P85/75-ml-S1/
http://www.detailedimage.com/Optimum...-P291/8-oz-S1/
http://www.detailedimage.com/Meguiar...-P847/5-oz-S1/

This is Chemical Guys entire metal polishing line:
http://www.chemicalguys.com/Chrome_w...ROME_s/199.htm

 

0000 steel wool and soap or P21S Total Auto Wash will do the trick