Is it possible to make the audio louder without doing an aftermarket system?

 

You can add an amplifier.

 

I read in the manual that there's this thing called a volume dial. I've used it a couple times and the volume does increase

If you're thinking about Forscan, maybe it will but I don't think it would work. The amp and speakers both have limits that cannot be ignored via software.

 

Haha 30 isn’t enough with the windows down!

I have the B&O system if that helps anyone with suggestions

 

if you turn the factory speakers up and they are not loud enough they are probably at their limit. The factory system is designed to reach a certain limit without damaging the components.

is it something specifically you're lacking? treble? mids? bass? because they you can upgrade that certain component to help with that

 

If your rig doesn't have enough cowbell for you, you can add more cowbell courtesy of some amplifiers.

 

How deaf are you? I've never needed to go above 12 with windows, pano roof and rear slider all open at once, going 65 MPH!

 

Deafness isn't funny, perhaps op is an artillery veteran.

 

Holy crap... 30 would make my ears bleed.

 

The B&O at above 25 distorts like crazy, anything with a lot of bass lowers that threshold to 18-20.

Go aftermarket if you're looking to bump other people's cars...and/or get a better mid and low range.