I've ridden three FTRs, and only one exhibited any really noticeable throttle surge, and that was one of Indian UKs own demonstrator/test fleet (a 100% Carbon). The first FTR I rode was an FTR Sport on a test ride from my local dealer, that was brilliant, no noticeable surging, The second was Indian UKs 100% Carbon with a bit of surging, but IIRC that was only at lower speeds, on an accompanied group test ride. My own FTR Carbon R is great, and I think its smoother than my Ducati Supersport. So could it possibly be predominantly due to setup, as the Sport and my Carbon R were both setup/supplied by the same local dealer?

Next time I'm at the dealer I'll ask if they do anything specific during setup.