Pipes are on and loud. It add's so much to the the experience.
Kinda takes me back to when I was a we lad with playing cards in the spokes of my schwin bike. I guess the Harley sounds were those that ballons on the spokes.
I belong to another forum and what they do to cover there expenses is sell a forum patch for $15 bucks. They probably cost less than $2 to produce and you at least get a patch to wear if your into that.
Yes you can.
When you increse the air intake say with a stage 1 air cleaner is when you need to remap. The air cleaner volume increase will get you more HP.