Hello Samo,
I am running a Ramair with standard header, 6 sidewinder slip on exhaust system from Campbell custom and the 20228-goodbase-free-flow-cat-delete-ramair-anti-decel-pop-plus-extra5.17 located in our Resource area on the forum. It has completely stopped the decal pop and she runs like a dream.
Grace my bike is an 06 Classic.
Definitely worth a try, you can always set it back to your base.
I would read some of the great posts listed in the Tune forum, that is where I started and it gave me an idea about what settings I need to change. Also there was some great video's on 'how to' fit the Ramair.
Keep us posted on any changes you make and how the related performance, it helps others learn and make decisions.