I don't know if this has been asked before but with putting in speakers in lower fairing pods, should you add pollyfill or leave empty?

 

I’ve done it both ways with 2 different speakers to see if I could tell a difference and honestly, I personally couldn’t hear a bit of difference. A lot of guys swear by it but I set my lowers to play from mid/high 100’s to where ever they sound best at capped up top. Maybe it would be a more pronounced difference if I were trying to play them lower.

It wont hurt to try and see if you like it or not though.

 

x2. I added fill to my lowers and rear pods and couldn't tell one bit of difference. The good news is the stuff is extremely cheap, and it certainly doesn't hurt.