I've seen gains with the street Sprint on the dyno but not a huge amount. You have to tune for it. Have one in my broken 13...
With that said, the new filter looks promising but it's new and I haven't seen any results cept for the runs brock posted.
For any high flow filter you can't jist tune on the dyno and expect it to be right. The fuel trims for each gear will be off.
I opted for the MWR WSBK filter myself since I know it shows real results.