I did a QSC clutch kit on both my 850 and my 1k and was the best bang for your buck for sure. I'm plum happy with the 850 because the gf rides it most of the time and I have it setup for plowing snow in the winter so no big deal. Now my 1k is my then likely going to get the tune but I'm waiting till spring because here in MT we are in the middle of a very harsh winter with lots of snow so I wouldn't be able to tell the real gain anyway. Not sure on the clutching on your HL but maybe get ahold Ryan and see what he says.
2015 polaris sportsman 1000, fender flares, front and rear Polaris bumpers powder coated red, lock and ride front box and ogio rear, hand warmers and thumb warmer, winch, mid-smoke windshield, QSC clutch kit, and plow mount, and polaris tracks.
2013 Polaris 850xp (blue fire)
26" Bighorns, fender flares, front cargo box, QSC clutch kit, Polaris 2500 winch with remote, synthic rope and aluminum fairlead, Polaris windshield , heated grips and thumb warmer, NGK plugs, powder coated front and rear Polaris bumpers, kolpin lock and ride gun boot, Polaris tracks for winter time in MT.
2016 Ski Doo 800 etec T3 154"
2016 Polaris 170 Razor
been riding since I was 8 and been through over 30 machines I'm now 35 and loving life more then ever!!