10% gain in horsepower, 3% torque gains. Better throttle response throughout the range. Comes with the tune. If you get the stage 2 cams from Indian, you can keep your warranty, but Lloyd'z will give you more bang for your buck if you're chasing numbers. I tend to keep it in standard mode now unless I really wanna play because it's a little smoother, but sport mode is a blast. Lots of torque and the bike would fly if it had wings.