I've installed a RF 300x2 with 2 Kappas in the fairing on my 16 SGS. The setup sounded great on my 13 SG, sounds like crap on this one. Tuned on the amp for 20 minutes last night, it's turned down to almost off now. Anything higher gets the blat blat blat sound. Anyone have any luck at all having the dealer flash the system? If so, do you know which setting you wound up with? Local dealer has no clue.
Thanks, Rat

 

you'll want your flash stock, if you've never had it flashed your golden for 2 speakers. If you decide to go to fronts and rears you'll need a stock ultra flash (no amp, 4 speakers, fairing and pods) this will give you fader.

As to the sound, well HD put a EQ curve in the Rushmore head units that when amplified sounds like a bag of howling cats! It's designed for the crappy Boom stuff. You'll need to clean up the signal with either an EQ, Line out Converter, or what's recommended (and tried) Biketronics BT355 Line Leveler

 

Biketronic Line levelers, read about them all over the place

 

Can confirm, just installed my BT355 and had my bike flashed back to stock yesterday. Sounds way better and I haven't even tuned it.

 

BT line leveler ALL DAY, makes a huge difference.

 

Thanks guys. Always get the good info here. On to search for a good deal on a BT355!