Wouldn't the ECU need to be flashed with the slip on though? I can't imagine you'd really see any gains if it was under the same tune?
I'd really love to get the Termi exhaust, but $3,000 installed is just ridiculous. That and I'd lose the panniers.
I got my leftover 2016 w/ 3 miles on it for just over $10,000. I can't justify paying a third of the price of the bike to get a better sounding exhaust (Maybe?), lose the panniers and maybe pick up a HP or two.......